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10 pages, 3832 KiB  
Case Report
First Case of Human Ocular Dirofilariasis in the Aosta Valley Region: Clinical Management and Morphological-Molecular Confirmation
by Erik Mus, Annalisa Viani, Lorenzo Domenis, Fabio Maradei, Antonio Valastro, Gianluca Marucci, Claudio Giuseppe Giacomazzi, Silvia Carla Maria Magnani, Roberto Imparato, Annie Cometto, Adriano Casulli, Riccardo Orusa and Luca Ventre
Pathogens 2025, 14(5), 423; https://doi.org/10.3390/pathogens14050423 - 28 Apr 2025
Viewed by 1089
Abstract
Purpose: Dirofilariasis is a zoonotic infectious disease caused by a species belonging to the Dirofilaria genus. Human dirofilariasis cases have increased in Europe in the last few decades. Dogs and wild canids represent the definitive hosts and principal reservoirs of Dirofilaria repens, while [...] Read more.
Purpose: Dirofilariasis is a zoonotic infectious disease caused by a species belonging to the Dirofilaria genus. Human dirofilariasis cases have increased in Europe in the last few decades. Dogs and wild canids represent the definitive hosts and principal reservoirs of Dirofilaria repens, while mosquito species are biological vectors. Humans act as accidental hosts, and clinical manifestations depend on the location of the worm in the organs or tissues. We described the first case of ocular dirofilariasis in the Aosta Valley region (Italy). Case description: a 62-year-old Italian woman complained of recurrent ocular redness, pain and discomfort, accompanied by itching and foreign body sensation in the right eye. The slit lamp biomicroscopic examination revealed conjunctival congestion on the temporal region of bulbar conjunctiva, and a long whitish vermiform mobile mass was detected under the conjunctiva. The anterior chamber showed no flare or cells in either eye, and the dilated fundus examination was normal. The worm was immediately surgically removed to prevent further migration, and was diagnosed morphologically and molecularly as D. repens. Following surgical removal, the symptoms resolved completely and rapidly, with no recurrence of ocular symptoms recorded during 12-month follow-up visits. Conclusions: Ocular dirofilariasis can lead to misdiagnosis due to its rare ocular manifestations, and it is considered an emergent zoonosis in European countries. Accurate diagnosis and control of ocular dirofilariasis by D. repens require a multidisciplinary approach under the One Health framework to effectively address this emergent zoonosis. Full article
(This article belongs to the Special Issue One Health and Neglected Zoonotic Diseases)
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11 pages, 2051 KiB  
Article
Ocular Ultrasound as a Key to Diagnosing Uveitis-Masked Syndromes: Tips and Tricks
by Valeria Albano, Rosanna Dammacco, Ilaria Lolli, Claudia Ventricelli, Enrico Settimo, Angelo Miggiano, Maria Grazia Pignataro, Paolo Ferreri, Francesco Boscia, Silvana Guerriero and Giovanni Alessio
Clin. Pract. 2025, 15(5), 84; https://doi.org/10.3390/clinpract15050084 - 23 Apr 2025
Viewed by 612
Abstract
Background and Objectives: Uveitis-masked syndromes or masquerade syndromes (UMSs) are a group of ocular conditions with several systemic underlying causes, malignant or nonmalignant, that mimic the inflammatory status of the uvea. They are often difficult to detect and diagnose with traditional techniques, [...] Read more.
Background and Objectives: Uveitis-masked syndromes or masquerade syndromes (UMSs) are a group of ocular conditions with several systemic underlying causes, malignant or nonmalignant, that mimic the inflammatory status of the uvea. They are often difficult to detect and diagnose with traditional techniques, such as ophthalmic exams. Ocular B (bidimensional)-ultrasound (OBU) is a non-invasive, repeatable, rapid ultrasound method effective in indirect signs that lead back to systemic diseases. It is comparable in effectiveness with other imaging tools. The cause of UMSs can often be serious, and therefore early diagnosis and prompt treatment are critical. This study aimed to identify the sonographic signs of these forms, which can help physicians discover the cause underlying UMS. Materials and Methods: This was a consecutive, retrospective, nonrandomized study. This study was conducted at the University Hospital Polyclinic of Bari, Italy, from January 2022 to December 2024. A total of 186 patients were included, from 10 to 85 years old. They all underwent B-scan ultrasonography (Quantel Medical ABSolu Ocular Ultrasound). Results: All patients reported blurred vision, which could be accompanied by visual reduction (<20/40, Snellen charts), photophobia, floaters, flashes, proptosis, and redness. In all cases, we noted peculiar ultrasonographic signs, which allowed us to discriminate the underlying systemic diagnosis, such as vitreous corpuscles, choroid thickening, and primitive or metastatic solid tumors. Finally, we identified different diseases, such as primary intraocular lymphoma (PIOL), other lymphoproliferative conditions, orbital plasmacytoma, uveal melanoma, metastasis, endogenous endophthalmitis, retinal detachment, central serous retinopathy, metallic foreign bodies, ocular amyloidosis, and drug-induced UMSs. The sensitivity and specificity of ocular ultrasound compared to multimodal ocular imaging in UMSs were as follows: for primary intraocular lymphoma (PIOL) and other lymphoproliferative conditions, 0.98 (95% CI, 0.80–1) and 0.68 (90% CI, 0.40–0.92), respectively; for orbital plasmacytoma, 0.64 (92% CI, 0.52–0.86) and 0.66 (93% CI, 0.48–0.89), respectively; uveal melanoma, 1.00 (98% CI, 0.88–1.00) and 0.98 (95% CI, 0.86–0.98), respectively; metastasis, 0.75 (95% CI, 0.53–0.85) and 0.85 (95% CI, 0.48–0.98), respectively; endogenous endophthalmitis, 1.00 (95% CI, 0.50–1.00) and 0.83 (95% CI, 0.48–0.98), respectively; retinal detachment, both were 1.00 (95% CI, 0.87–1.00 and 0.84–0.97, respectively); central serous retinopathy, 0.60 (80% CI, 0.41–0.88) and 0.85 (95% CI, 0.52–0.98), respectively; metallic foreign bodies, 1.00 (95% CI, 0.78–1.00) and 0.99 (95% CI, 0.99–1.00), respectively; ocular amyloidosis, 0.77 (82% CI, 0.52–0.90) and 0.83 (80% CI, 0.49–0.88), respectively; and drug-induced UMSs, 0.64 (95% CI, 0.49–0.88) and 0.85 (95% CI, 0.52–0.98), respectively. Conclusions: Diagnosing UMS accurately can be quite challenging, and many of its different types frequently go undetected. This complexity in identification often leads to underdiagnosis, meaning it is essential to improve awareness and understanding of the condition in order to achieve better recognition and treatment. Early detection of these forms is imperative. The use of OBU can help diagnose indirect signs of these forms early and treat them promptly. It compares well with other diagnostic imaging techniques, such as MRI, but this does not mean that it replaces them; it can offer added value in multimodal imaging. Full article
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14 pages, 888 KiB  
Article
Effectiveness of 0.1% Cyclosporine a Cationic Emulsion for Treating Dry Eye Disease After Cataract Surgery Analyzed Using a Placido Tear Film Analyzer
by Song-A Che, Sang Beom Han and Yongwoo Lee
Diagnostics 2025, 15(8), 981; https://doi.org/10.3390/diagnostics15080981 - 12 Apr 2025
Viewed by 735
Abstract
Background/Objectives: We aimed to evaluate the effectiveness of a 0.1% cyclosporin A cationic emulsion (CsA-CE) for dry eye disease (DED) post-cataract surgery using the DED index measured with a Placido tear film analyzer. Methods: We retrospectively reviewed the medical records of [...] Read more.
Background/Objectives: We aimed to evaluate the effectiveness of a 0.1% cyclosporin A cationic emulsion (CsA-CE) for dry eye disease (DED) post-cataract surgery using the DED index measured with a Placido tear film analyzer. Methods: We retrospectively reviewed the medical records of patients who underwent simple cataract surgery. All patients used 0.5% moxifloxacin and 1% prednisolone acetate eye drops four times daily postoperatively. They were divided into the CsA-CE and control groups based on whether they had used CsA-CE 1 week after surgery. Subjective and objective assessments were performed at the baseline and 1 month postoperation. The non-invasive tear meniscus height, non-invasive tear break-up time, conjunctival redness, meibomian gland morphology, and lipid layer thickness were assessed using the Keratograph 5M (Oculus). Results: No differences were observed in the preoperative dry eye parameters between the groups. The ocular surface disease index decreased from 19.26 to 14.58 (p = 0.046) at 1 month postoperation for the CsA-CE group, and the average non-invasive tear break-up time significantly increased from 10.97 to 13.00 s (p = 0.002). No such differences were observed for the control group. Nasal bulbar conjunctival hyperemia increased (p < 0.001) for the control group. Nasal limbal hyperemia and overall limbal hyperemia increased for both groups (CsA-CE, p = 0.005, 0.017; control, p = 0.001, 0.012). The lipid layer thickness increased from 70.29 to 86.41 nm for the CsA-CE group (p < 0.001), whereas no significant change was noted for the control group. Conclusions: CsA-CE (0.1%) is effective for treating DED after cataract surgery and improves the tear lipid layer. Full article
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7 pages, 2585 KiB  
Case Report
Successful Treatment of Acanthamoeba Keratitis According to New Protocol with Polihexanide 0.08% Therapy: Case Report
by Tomislav Kuzman, Suzana Matić, Ivan Gabrić, Antonela Geber and Ana Meter
Reports 2025, 8(2), 44; https://doi.org/10.3390/reports8020044 - 4 Apr 2025
Viewed by 860
Abstract
Background and Clinical Significance: Acanthamoeba keratitis (AK) is a rare but serious corneal infection that can lead to severe visual impairment or blindness if not promptly treated. The condition is primarily associated with contact lens use but can also occur due to ocular [...] Read more.
Background and Clinical Significance: Acanthamoeba keratitis (AK) is a rare but serious corneal infection that can lead to severe visual impairment or blindness if not promptly treated. The condition is primarily associated with contact lens use but can also occur due to ocular trauma or environmental contamination. The most frequently used treatment options include biguanides and diamidines, though dosing protocols remain empirical and vary widely among clinicians. Recent research has explored a new standardized protocol with 0.08% polihexanide (polyhexamethylene biguanide, PHMB) as a monotherapy for AK, offering improved efficacy and better corneal penetration. Case Presentation: This case report describes a 35-year-old female contact lens wearer who presented with redness, pain, photophobia, and vision loss in her right eye. Upon referral, a slit-lamp examination revealed stromal infiltrates and perineural involvement, with in vivo confocal microscopy (IVCM) confirming Acanthamoeba cysts. The patient was treated with a new standardized intensive regimen of polihexanide 0.08% monotherapy, leading to rapid clinical improvement. Corneal infiltrates were significantly reduced, and the best-corrected visual acuity (BCVA) improved from 0.4 logMAR to 0.15 logMAR. Resolution with only discrete stromal haze was achieved over the following months, without recurrence. Conclusions: This case highlights the potential of polihexanide 0.08% monotherapy as an effective treatment for AK in a new standardized treatment protocol. Full article
(This article belongs to the Section Ophthalmology)
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9 pages, 313 KiB  
Article
Genetic Screening for Hereditary Transthyretin Amyloidosis in the Population of Cammarata and San Giovanni Gemini Through Red Flags and Registry Archives
by Vincenzo Di Stefano, Christian Messina, Antonia Pignolo, Fiore Pecoraro, Ivana Cutrò, Paolo Alonge, Nicasio Rini, Umberto Quartetti, Vito Lo Bue, Eugenia Borgione and Filippo Brighina
Brain Sci. 2025, 15(4), 365; https://doi.org/10.3390/brainsci15040365 - 31 Mar 2025
Viewed by 649
Abstract
Introduction: Hereditary transthyretin amyloidosis (ATTRv) is a severe, multisystemic, autosomal dominant disease with variable penetrance caused by mutations in the TTR gene generating protein misfolding and accumulation of amyloid fibrils. The diagnosis is usually challenging because ATTRv may initially manifest with nonspecific [...] Read more.
Introduction: Hereditary transthyretin amyloidosis (ATTRv) is a severe, multisystemic, autosomal dominant disease with variable penetrance caused by mutations in the TTR gene generating protein misfolding and accumulation of amyloid fibrils. The diagnosis is usually challenging because ATTRv may initially manifest with nonspecific multisystemic symptoms. Conversely, an early diagnosis is needed to start timely appropriate therapy. Hence, screening models have been proposed to improve ATTRv diagnosis. In this study, we propose a genetic screening model based on predefined “red flags” followed by “cascading screening” on first-degree relatives of patients who tested positive. Materials and methods: After obtaining written informed consent, genetic testing on salivary swabs was performed in individuals who met at least two major red flags for ATTRv (age > 65 years old, progressive sensory or sensorimotor neuropathy not responsive to steroids or immunomodulant therapies, recent and unexplained weight loss associated with gastrointestinal signs and symptoms, diagnosis of cardiac amyloidosis, bilateral or relapsing carpal tunnel syndrome, unexplained autonomic dysfunction) or one major flag and two minor flags (family history of neuropathy, ambulation disorders or cardiopathy, sudden cardiac death, a bedridden, wheelchaired patient without specific diagnosis excluding upper motor neuron diseases, infections, juvenile cardiac disease, ocular disorders, lumbar spine stenosis, biceps tendon rupture). Results: In the first screening phase, 29 suspected cases (individuals meeting at least two major red flags or one major red flag and two minor red flags) underwent genetic testing. One patient (3.5%) was diagnosed with hereditary transthyretin amyloidosis with polyneuropathy (ATTRv-PN), carrying the Phe64Leu mutation. Then, cascade screening allowed for early recognition of two additional individuals (two pre-symptomatic carriers) among two first-degree relatives (100%). The identified patient was a 72-year-old man who had a family history of both cardiopathy, neuropathy, and a diagnosis of juvenile cardiac disease and progressive sensorimotor neuropathy unresponsive to steroids or immunomodulant therapies. Conclusions: ATTRv is a progressive and often fatal disease that should be promptly diagnosed and treated to stop progression and reduce mortality. Systematic screening for ATTRv yielded increased recognition of the disease in our neurological clinic. A focused approach for the screening of ATTRv-PN could lead to an earlier diagnosis and identification of asymptomatic carriers, enabling timely intervention through close clinical monitoring and early treatment initiation at symptom onset. Full article
(This article belongs to the Section Neurodegenerative Diseases)
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10 pages, 1301 KiB  
Article
Effect of a Nano-Sized Lipid-Based Eye Drop on Diabetic Dry Eye
by Rosario Gulias-Cañizo, Pablo Alexis Limón-Zurita, Jimena Ceja-Martínez and Oscar Guerrero-Berger
Biomedicines 2025, 13(4), 763; https://doi.org/10.3390/biomedicines13040763 - 21 Mar 2025
Viewed by 584
Abstract
Background: Dry eye disease (DED) is currently recognized as a global health concern, with a prevalence that ranges from 5% to 75%. Given the severity of dry eye in diabetic patients and the global prevalence of diabetes, it is crucial to evaluate [...] Read more.
Background: Dry eye disease (DED) is currently recognized as a global health concern, with a prevalence that ranges from 5% to 75%. Given the severity of dry eye in diabetic patients and the global prevalence of diabetes, it is crucial to evaluate new treatments that potentially improve tear film stability in this patient population. Methods: Single-center, open-label, single-arm, and interventional study in adult patients with type-2 diabetes mellitus and all DED subtypes evaluating a propylene glycol-hydroxypropyl guar nanoemulsion that has shown in previous studies to improve tear film stability in nondiabetic patients. Results: After 28 days of treatment, the Ocular Surface Disease Index (OSDI) scores showed significant improvement, decreasing from a baseline mean of 42.72 ± 17.69 to 25.53 ± 17.14 on Day 28 (p < 0.001); Non-Invasive Keratograph Break-Up Time (NIKBUT) also improved significantly, increasing from 3.45 ± 1.17 s at baseline to 5.94 ± 1.48 s on Day 28 (p < 0.001). No significant changes were observed in the infrared meibography score (baseline: 1.48 ± 0.93 vs. Day 28: 1.47 ± 0.92, p = 0.279), tear meniscus height (TMH) (baseline: 0.25 ± 0.10 mm vs. Day 28: 0.25 ± 0.08 mm, p = 0.086), or meibomian gland expressibility score (MGES). The redness score significantly decreased from 1.88 ± 0.68 at baseline to 1.40 ± 0.59 on Day 28 (p < 0.001). Conclusions: These findings suggest notable improvements in both signs and symptoms of dry eye disease in diabetic patients with all DED subtypes and severity categories. Full article
(This article belongs to the Section Molecular and Translational Medicine)
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7 pages, 6928 KiB  
Interesting Images
Unilateral Reverse Pupillary Block Associated with Multiple Ciliary Body Cysts and Pseudoexfoliative Syndrome
by Idoia Goñi Guarro, Mia Zorić Geber, Rašeljka Tadić, Renata Iveković and Zoran Vatavuk
Diagnostics 2025, 15(6), 758; https://doi.org/10.3390/diagnostics15060758 - 18 Mar 2025
Viewed by 524
Abstract
The aim of this study is to present interesting images of a clinical case of asymmetrical bilateral ciliary body cysts associated with pseudoexfoliative syndrome (PEX), leading to unilateral reverse pupillary block and subsequent secondary angle-closure glaucoma in a 64-year-old patient who presented with [...] Read more.
The aim of this study is to present interesting images of a clinical case of asymmetrical bilateral ciliary body cysts associated with pseudoexfoliative syndrome (PEX), leading to unilateral reverse pupillary block and subsequent secondary angle-closure glaucoma in a 64-year-old patient who presented with vision loss and redness, revealing angle-closure glaucoma in the left eye. Slit lamp examination showed an asymmetrical iris configuration between the eyes, with a normal appearance in the right eye and an inverted “volcano-shape” iris appearance, corresponding to reverse pupillary block, with pseudoexfoliation in the left eye. Multimodal imaging confirmed the presence of bilateral ciliary body cysts, which were unexpectedly identified in the right eye. The patient’s secondary angle-closure glaucoma in the left eye was likely due to anterior displacement of the iris from these cysts. Following an inadequate response to topical and systemic treatments, the patient underwent trabeculectomy in the left eye, successfully stabilizing the intraocular pressure (IOP) and leading to the resolution of the reverse pupillary block. This case underscores the importance of thorough ocular examination and multimodal imaging in diagnosing complex clinical presentations like secondary angle-closure glaucoma stemming from the combination of ciliary body cysts’ pressure towards the angle, the pseudoexfoliative material component, and the reverse pupillary block configuration. All of the findings provided critical diagnostic clues leading to the identification of the underlying pathology. Full article
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22 pages, 3081 KiB  
Review
Overview of Dry Eye Disease for Primary Care Physicians
by Jeonghyun Kwon, Amirhossein Moghtader, Christie Kang, Zahra Bibak Bejandi, Sumaiya Shahjahan, Ahmad Alzein and Ali R. Djalilian
Medicina 2025, 61(3), 460; https://doi.org/10.3390/medicina61030460 - 6 Mar 2025
Viewed by 2586
Abstract
Dry eye disease (DED), also known as keratoconjunctivitis sicca, is a multifactorial ocular disease characterized by tear film insufficiency due to diverse etiologies including aging, incomplete and infrequent blinking, hormonal changes, medications, and systemic diseases. Classified into aqueous-deficient dry eye (ADDE), evaporative dry [...] Read more.
Dry eye disease (DED), also known as keratoconjunctivitis sicca, is a multifactorial ocular disease characterized by tear film insufficiency due to diverse etiologies including aging, incomplete and infrequent blinking, hormonal changes, medications, and systemic diseases. Classified into aqueous-deficient dry eye (ADDE), evaporative dry eye (EDE), and mixed subtypes, DED presents with symptoms such as irritation, stinging, redness, foreign body sensation, sensitivity to light, and blurred or fluctuating vision. While rare, severe cases may lead to vision loss. With its rising global prevalence across age groups, DED poses a significant public health challenge. Primary care physicians (PCPs), often the first point of contact for DED patients, require timely screening and management strategies. This review explores the epidemiology, pathophysiology, clinical manifestations, diagnosis, and management of DED, emphasizing practical approaches for PCPs. This narrative review was conducted by searching MEDLINE, PubMed, and Google Scholar databases for relevant articles. Diagnostic approaches, including detailed history taking, patient-reported questionnaires, differential diagnosis, and assessments are discussed alongside management strategies, including symptomatic ophthalmic treatment, risk factor mitigation (e.g., reduced digital device screen time), prevention, and nutrition. By providing a synopsis of early symptoms that PCPs are often the first to encounter, practical approaches to screening and managing DED in the primary care setting, and guidelines on when to refer to specialty care, this comprehensive review aims to equip PCPs with the knowledge to improve DED screening and optimize patient outcomes. Full article
(This article belongs to the Section Ophthalmology)
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13 pages, 1107 KiB  
Article
Colour Preference of Post Hatchling Hawksbill (Eretmochelys imbricata) and Green (Chelonia mydas) Sea Turtles in Captivity
by Jordan Drake, Mohammed F. Khayat, Rhondda Jones and Ellen Ariel
Animals 2025, 15(5), 628; https://doi.org/10.3390/ani15050628 - 21 Feb 2025
Viewed by 1187
Abstract
Variations in the ecological roles of sea turtle species may lead to differentiations in ocular design and visual sensitivity to the colour spectrum. Behavioural colour preference studies in air and in water on hatchling and post-hatchling green turtles found evidence of a blue [...] Read more.
Variations in the ecological roles of sea turtle species may lead to differentiations in ocular design and visual sensitivity to the colour spectrum. Behavioural colour preference studies in air and in water on hatchling and post-hatchling green turtles found evidence of a blue hue attractiveness when given a choice between blue, red, and yellow. This paper assessed and compared the colour preferences to singular colours via the behavioural responses of eleven hawksbill turtles and twelve green turtles at 15 months of age and at 22 months of age. Turtles were presented with one coloured water balloon per day (purple (400–450 nm), dark blue (450–490 nm), cyan (490–520 nm), green (520–560 nm), yellow (560–590 nm), orange (590–635 nm), and red (635–700 nm)). Time to contact balloons with beak and behaviours exhibited by turtles were recorded. Hawksbill turtles had the greatest level of interactions across both phases to shorter wavelengths with hue preference being between 450 and 490 nm. Green turtles consistently had the greatest level of interaction to longer wavelengths with a yellow (560–590 nm) hue preference. The results of this study support behavioural differences between two co-occurring turtle species that may reflect an adaptive preference for colour wavelengths associated with the optimal foraging niche for each. Full article
(This article belongs to the Section Herpetology)
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21 pages, 4317 KiB  
Article
Topical Application of VitB6 Ameliorates PM2.5-Induced Dry Eye via NFκB Pathway in a Murine Model
by Jinyu Hu, Yanmei Zeng, Liying Tang, Lei Ye, Cheng Chen, Qian Ling, Xiaoyu Wang, Liangqi He, Xu Chen, Yixin Wang, Qianmin Ge and Yi Shao
Biomedicines 2025, 13(3), 541; https://doi.org/10.3390/biomedicines13030541 - 21 Feb 2025
Viewed by 871
Abstract
Background/Objectives: Dry eye (DE) is mainly characterized by dryness, foreign body sensation, eye pain and visual impairment. Their possible causes are mainly inflammation, tissue damage and neurosensory abnormalities, and vitamin B6 (VitB6) attenuates the inflammatory response by modulating the NF-κB pathway to quench [...] Read more.
Background/Objectives: Dry eye (DE) is mainly characterized by dryness, foreign body sensation, eye pain and visual impairment. Their possible causes are mainly inflammation, tissue damage and neurosensory abnormalities, and vitamin B6 (VitB6) attenuates the inflammatory response by modulating the NF-κB pathway to quench reactive oxygen species (ROS). The aim of this experiment was to investigate the therapeutic effect of VitB6 eye drops on particulate matter 2.5 (PM2.5)-induced dry eye in mice. Methods: Mice induced with the dry eye group were first induced using PM2.5 eye drops in a standard environment for 14 days, and then treated with different concentrations of VitB6 eye drops for 14 consecutive days. The phenol red cotton test was used to measure tear production. Ocular inflammation index and tear film function were evaluated by slim microscopy. Hematoxylin–eosin (HE) staining was used to observe conjunctival and corneal structure. Periodate–Schiff (PAS) staining was used to quantify conjunctival goblet cells. Corneal cell apoptosis was determined by TUNEL assay. The expression of keratin 10 (K10) and p-NF-κB p65 was detected by immunofluorescent staining and Western blot analysis. Results: Mice using only the PM2.5 model all exhibited varying degrees of dry eye symptoms. VitB6 treatment increased tear secretion and reduced inflammatory indices in mice with increased nerve density and number of branches in the basement membrane of the corneal epithelium. Conclusions: We found that administering VitB6 eye drops has a therapeutic effect in PM2.5-induced DE. This observation suggests that VitB6 may be useful in the clinical therapy of DE. Full article
(This article belongs to the Special Issue Wound Healing: From Mechanisms to Therapeutic Approaches)
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13 pages, 5822 KiB  
Article
The Potential Roles of IL-1β, IL-6, and RIPK3 in the Pathogenesis of Stevens–Johnson Syndrome/Toxic Epidermal Necrolysis
by Chandana Sooranahalli, Vidhya R. Rao, Brandon Zelman, Mallika Shekhar, Sevnur Komurlu Keceli, Charles Bouchard and Omer Iqbal
Diagnostics 2025, 15(3), 290; https://doi.org/10.3390/diagnostics15030290 - 26 Jan 2025
Viewed by 1086
Abstract
Background/Objectives: Stevens–Johnson Syndrome and Toxic Epidermal Necrolysis (SJS/TEN) are rare but severe skin conditions, often triggered by medications, that can be life-threatening. These conditions frequently affect the eyes, causing ocular surface disease, which can result in visual impairment or blindness. Although the exact [...] Read more.
Background/Objectives: Stevens–Johnson Syndrome and Toxic Epidermal Necrolysis (SJS/TEN) are rare but severe skin conditions, often triggered by medications, that can be life-threatening. These conditions frequently affect the eyes, causing ocular surface disease, which can result in visual impairment or blindness. Although the exact mechanisms behind SJS/TEN remain unclear, key inflammatory mediators such as IL-1β, IL-6, and RIPK3 are believed to play critical roles in inflammation, necroptosis, and regulatory processes. Investigating these factors offers new insights into the disease’s underlying mechanisms and potential targets for treatment. This study aims to determine the roles of IL-1β, IL-6, and RIPK3 in the pathogenesis of SJS/TEN. Methods: The study examined the expression levels of IL-1β, IL-6, and RIPK3 in skin biopsies from patients with biopsy-confirmed SJS/TEN, using lichen planus as a positive control and normal skin as a baseline control. Immunohistochemistry was employed for this analysis. Additionally, the impact of SJS/TEN patient plasma on mitochondrial function was assessed in platelets and human corneal epithelial (H-CET) cells. Using a fluorescent plate reader, mitochondrial activity and superoxide ion levels were measured, comparing plasma from SJS/TEN patients to normal human plasma. Results: Skin biopsies from SJS/TEN patients showed a significantly higher expression of IL-1β, IL-6, and RIPK3 compared to both lichen planus and normal controls. Furthermore, plasma from SJS/TEN patients significantly reduced platelet viability and increased mitochondrial and total cellular superoxide ions, as demonstrated by elevated levels of MitoSOX Red and CellROX Red. Conclusions: These findings suggest that IL-1β, IL-6, and RIPK3 may contribute to the pathogenesis of SJS/TEN and highlight their potential as targets for therapeutic intervention. Full article
(This article belongs to the Special Issue Advances in the Diagnosis of Skin Disease)
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14 pages, 799 KiB  
Article
Study on Hematological and Biochemical Index of Blood and Vitreous Humor in the Celestial-Eye Goldfish
by Rongni Li, Yansheng Sun, Xin Zhang and Wentong Li
Appl. Sci. 2025, 15(2), 774; https://doi.org/10.3390/app15020774 - 14 Jan 2025
Viewed by 1009
Abstract
In this study, we conducted an exploration of blood collection, hematological and biochemical comparative analysis of the unique vitreous humor and blood of the celestial-eye goldfish (CE) (Carassius auratus), and obtained hematological and biochemical indicators for healthy celestial goldfish blood. After [...] Read more.
In this study, we conducted an exploration of blood collection, hematological and biochemical comparative analysis of the unique vitreous humor and blood of the celestial-eye goldfish (CE) (Carassius auratus), and obtained hematological and biochemical indicators for healthy celestial goldfish blood. After exploring the optimal method for collecting blood and ocular fluid, blood and vitreous humor samples were drawn from healthy CE, and an automatic hematology analyzer was used to measure 17 physiological indicators in the blood and vitreous humor. Additionally, 20 biochemical indices were measured by an automatic biochemical analyzer. Experiments were also conductedto evaluate the effect of blood and vitreous humor collection on the subsequent survival rate of the CE. The results showed that the blood of CE exhibited values for 17 hematological indicators, including red blood cells (mean value: 2.19 × 1012/L), white blood cells (mean value: 62.21 × 109/L), hemoglobin (mean value:138.25 g/L), and no eosinophils or basophils. We also found that the levels of aspartate amino transferase (AST) and glutamyl transpeptidase (GGT) in the vitreous humor of CE were significantly higher than those in the serum (p < 0.01). No cells were detected in the vitreous humor of CE, and there was no significant difference in survival rate compared to normal goldfish after extracting blood and vitreous humor from CE (p > 0.05). This study provides fundamental data for the cultivation of healthy goldfish, the development of goldfish hematology, and further research on the development and formation of CE’s unique eye traits. Full article
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8 pages, 2706 KiB  
Case Report
Neovascular Glaucoma as the First Symptom of Bilateral Occlusive Retinal Vasculitis in a 4-Year-Old Girl: A Case Report
by Klaudia Rakusiewicz-Krasnodębska, Joanna Jędrzejczak-Młodziejewska, Krystyna Kanigowska and Wojciech Hautz
Biomedicines 2025, 13(1), 148; https://doi.org/10.3390/biomedicines13010148 - 9 Jan 2025
Viewed by 1050
Abstract
Neovascular glaucoma is a rare and serious condition typically associated with advanced ocular or systemic vascular diseases such as central retinal vein occlusion or diabetic retinopathy. This report describes a unique case of neovascular glaucoma presenting for the first time as an initial [...] Read more.
Neovascular glaucoma is a rare and serious condition typically associated with advanced ocular or systemic vascular diseases such as central retinal vein occlusion or diabetic retinopathy. This report describes a unique case of neovascular glaucoma presenting for the first time as an initial symptom of bilateral occlusive retinal vasculitis (ORV) in a generally healthy 4-year-old girl. The patient presented with symptoms of pain and redness in the left eye, accompanied by high intraocular pressure. These symptoms were particularly distressing and uncharacteristic for such a young child. Clinical examination revealed significant findings, including elevated intraocular pressure, corneal edema, and iris neovascularization in the left eye. Additional imaging studies, including fluorescein angiography, demonstrated extensive retinal ischemia with peripheral capillary nonperfusion, confirming the diagnosis of occlusive vasculitis. The management of this case was challenging due to the progressive and aggressive nature of the disease in a 4-year-old patient. This article aims to present the diagnostic and therapeutic strategies for the management of this condition. This report highlights a rare case of neovascular glaucoma as the first manifestation of bilateral ORV in a young child. The unusual presentation emphasizes the need for a high index of suspicion and comprehensive evaluation in cases of pediatric neovascular glaucoma. Early diagnosis and prompt, multimodal treatment are crucial in preventing irreversible vision loss in such cases. Full article
(This article belongs to the Special Issue Microcirculation in Health and Diseases)
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12 pages, 4024 KiB  
Article
Theranostic Contact Lens for Ocular Cystinosis Utilizing Gold Nanoparticles
by Eunbe Ha, Hwajeong Kang and Hyeran Noh
Biosensors 2025, 15(1), 16; https://doi.org/10.3390/bios15010016 - 3 Jan 2025
Cited by 1 | Viewed by 1546
Abstract
Ocular cystinosis is a disease in which accumulated cystine crystals cause damage to the eyes, necessitating timely treatment and ongoing monitoring of cystine levels. The current treatment involves frequent administration of cysteamine eye drops, which suffer from low bioavailability and can lead to [...] Read more.
Ocular cystinosis is a disease in which accumulated cystine crystals cause damage to the eyes, necessitating timely treatment and ongoing monitoring of cystine levels. The current treatment involves frequent administration of cysteamine eye drops, which suffer from low bioavailability and can lead to drug toxicity, making it essential to prescribe an appropriate dosage based on the patient’s condition. Additionally, cystine crystal levels are typically assessed subjectively via slit-lamp examination, requiring frequent clinical visits and causing discomfort for the patient. In this study, we propose a theranostic contact lens that simultaneously performs therapy and diagnosis on a single platform utilizing gold nanoparticles (GNPs). The binding interactions between GNPs and cystine were confirmed in solution, and thermodynamic analysis further elucidated the bonding force between the two substances. With a comprehensive understanding of these interactions, we investigated the potential of the theranostic GNP-loaded contact lens (GNP-CL). Upon exposure to various concentrations of cystine, the GNP-CL demonstrated distinct color changes, transitioning from red to blue. This color shift enabled quantitative monitoring of cystine levels. The treatment efficacy was validated by confirming a reduction in cystine concentration following the reaction. This platform has the potential to improve disease management in ocular cystinosis by reducing the reliance on cysteamine and offering an objective self-monitoring tool that does not require specialized equipment. Full article
(This article belongs to the Special Issue Nanoparticle-Based Biosensors and Their Applications)
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12 pages, 3302 KiB  
Article
In Vivo Imaging of Cobalt-Induced Ocular Toxicity in a Mouse Model
by Basel Obied, Galit Saar, Stephen Richard, Ygal Rotenstreich, Ifat Sher, Alon Zahavi and Nitza Goldenberg-Cohen
Methods Protoc. 2025, 8(1), 1; https://doi.org/10.3390/mps8010001 - 2 Jan 2025
Viewed by 1307
Abstract
Cobalt is a trace element, crucial for red blood cell formation and neurological function. Cobalt toxicity is often only diagnosed after severe manifestations, including visual impairment. We aimed to investigate whether optical coherence tomography (OCT) and magnetic resonance imaging (MRI) can effectively detect [...] Read more.
Cobalt is a trace element, crucial for red blood cell formation and neurological function. Cobalt toxicity is often only diagnosed after severe manifestations, including visual impairment. We aimed to investigate whether optical coherence tomography (OCT) and magnetic resonance imaging (MRI) can effectively detect cobalt-induced ocular toxicity in a murine model. Five wild-type mice (WT, C57Bl6) received daily intraperitoneal cobalt chloride injections for 28 days with a dosage of 12.5 mg/kg. Another 5 WT mice served as controls. After 28 days, all mice underwent manganese contrast-enhanced MRI and OCT examinations. Macroscopic and histological analysis of the enucleated eyes were performed. MRI revealed an increased signal in the optic nerves of injected mice. Anterion OCT provided in vivo visualization of the entire eye, demonstrating incipient cataract formation in the cobalt-injected mice. Both Spectralis domain OCT and Anterion, followed by histological analyses, confirmed preserved retinal structure with decreased thickness in the cobalt-injected group, with only minor neuronal damage and cell loss. Optic nerve analysis demonstrated myelin loss and increased inflammation with high levels of reactive gliosis. This study demonstrates optic neuropathy induced by cobalt toxicity, as shown by increased optic nerve signal on MRI without significant retinopathy. Anterion OCT showed incipient cataracts in the anterior segment. Full article
(This article belongs to the Section Biomedical Sciences and Physiology)
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