Glaucoma: New Diagnostic and Therapeutic Approaches, 3rd Edition

A special issue of Biomedicines (ISSN 2227-9059). This special issue belongs to the section "Molecular and Translational Medicine".

Deadline for manuscript submissions: 31 August 2026 | Viewed by 6495

Editor

Department of Ophthalmology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
Interests: ocular pharmacology; clinical trial; neuro-protection; rho-kinase inhibitor; glaucoma surgery
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Special Issue Information

Dear Colleagues,

We are delighted to present this Special Issue, entitled “Glaucoma: New Diagnostic and Therapeutic Approaches, 3rd Edition”, focusing on the latest advancements in the field of glaucoma management. Glaucoma remains one of the leading causes of irreversible blindness worldwide, necessitating the continuous exploration of novel approaches to improve patient outcomes. This Special Issue aims to provide a comprehensive overview of cutting-edge research and innovations in glaucoma management, highlighting emerging techniques and interventions that hold promise in the diagnosis, monitoring, and treatment of this complex ocular disease.

This Special Issue seeks to foster collaboration among researchers, clinicians, and industry professionals, facilitating the dissemination of knowledge and the exchange of ideas in the field of glaucoma. We invite original research articles, comprehensive reviews, and perspectives that cover a broad range of topics, including, but not limited to, the following:

Novel diagnostic techniques—articles elucidating the development and clinical application of innovative imaging modalities, genetic testing, and biomarkers for early detection and accurate diagnosis.

Advanced therapeutic interventions—pharmacological advancements and emerging therapies for glaucoma management, with an emphasis on their efficacy, safety, and long-term outcomes.

Artificial intelligence and digital health—research exploring the integration of artificial intelligence, machine learning, and digital health technologies in glaucoma screening, monitoring, and personalized treatment approaches.

Dr. Da-Wen Lu
Guest Editor

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Keywords

  • glaucoma
  • ocular pharmacology
  • ocular disease

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Published Papers (7 papers)

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Research

14 pages, 3108 KB  
Article
Association Between Geriatric Assessment Scores and Corneal Biomechanical Parameters in Patients with Glaucoma
by Yuto Yoshida, Yuri Fujino, Yuya Kato, Mayumi Furue, Hinako Ohtani, Chisako Ida, Kana Murakami, Mizuki Koike, Keigo Takagi, Kazunobu Sugihara and Masaki Tanito
Biomedicines 2026, 14(7), 1546; https://doi.org/10.3390/biomedicines14071546 - 10 Jul 2026
Viewed by 269
Abstract
Background/Objectives: Multiple age-related systemic conditions, including frailty, cognitive impairment, and comorbid diseases, have been suggested to be associated with glaucoma. However, their relationship with corneal biomechanical properties in patients with glaucoma remains unclear. Methods: This retrospective cross-sectional study included patients with [...] Read more.
Background/Objectives: Multiple age-related systemic conditions, including frailty, cognitive impairment, and comorbid diseases, have been suggested to be associated with glaucoma. However, their relationship with corneal biomechanical properties in patients with glaucoma remains unclear. Methods: This retrospective cross-sectional study included patients with glaucoma who attended the Department of Ophthalmology at Shimane University Hospital between May 2019 and August 2024. Corneal biomechanical parameters, including corneal hysteresis (CH), corneal resistance factor (CRF), corneal-compensated intraocular pressure (IOPcc), and Goldmann-correlated intraocular pressure (IOPg), were measured using the Ocular Response Analyzer (ORA; Reichert Technologies, Depew, NY, USA). Geriatric assessments, including the Geriatric 8 (G8), Mini-Cog, and Charlson Comorbidity Index (CCI), were also evaluated. Associations between geriatric assessment measures and ocular parameters were examined using multivariable linear mixed-effects models adjusted for age, sex, medication score, and glaucoma subtype. Results: A total of 280 patients (456 eyes) were included. The mean age was 70.2 ± 11.1 years, and 126 patients (45.0%) were women. In multivariable linear mixed-effects models, lower G8 scores were significantly associated with lower CRF (β = 0.18, 95% CI: 0.05 to 0.30), lower IOPcc (β = 0.55, 95% CI: 0.18 to 0.92), and lower IOPg (β = 0.62, 95% CI: 0.25 to 1.00). In contrast, no significant association was observed between G8 scores and CH (β = −0.02, 95% CI: −0.12 to 0.09). Neither Mini-Cog nor CCI was significantly associated with any ocular parameters. Conclusions: In patients with glaucoma, frailty may be associated with corneal biomechanical properties, particularly CRF and intraocular pressure-related parameters. Full article
(This article belongs to the Special Issue Glaucoma: New Diagnostic and Therapeutic Approaches, 3rd Edition)
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16 pages, 257 KB  
Article
Differential Associations of Cognitive Function, Frailty, and Comorbidity Burden with Visual Field Sensitivity and Reliability in Glaucoma
by Yuya Kato, Mayumi Furue, Chisako Ida, Hinako Ohtani, Kana Murakami, Mizuki Koike, Keigo Takagi, Yuto Yoshida, Kazunobu Sugihara and Masaki Tanito
Biomedicines 2026, 14(7), 1513; https://doi.org/10.3390/biomedicines14071513 - 5 Jul 2026
Viewed by 303
Abstract
Background/Objectives: Cognitive impairment, frailty, and systemic comorbidity burden are common in elderly patients with glaucoma and may influence both visual field (VF) performance and glaucoma severity. This study investigated the associations of comprehensive geriatric assessment (CGA) parameters, including Mini-Cog, G8, and Age-Adjusted [...] Read more.
Background/Objectives: Cognitive impairment, frailty, and systemic comorbidity burden are common in elderly patients with glaucoma and may influence both visual field (VF) performance and glaucoma severity. This study investigated the associations of comprehensive geriatric assessment (CGA) parameters, including Mini-Cog, G8, and Age-Adjusted Charlson Comorbidity Index (ACCI), with VF sensitivity and VF reliability indices in glaucoma patients. Methods: This retrospective cross-sectional study included 1125 eyes of 622 glaucoma patients who underwent Humphrey VF testing and CGA at a tertiary referral center. Associations between CGA parameters and VF indices, including mean deviation (MD), pattern standard deviation (PSD), foveal sensitivity, fixation loss rate (FL), false-negative rate (FN), and false-positive rate (FP), were evaluated. Generalized linear mixed models were used to assess independent associations after adjustment for demographic, systemic, and ocular covariates. Results: In univariate analyses, lower Mini-Cog and G8 scores and higher ACCI scores were associated with several VF sensitivity and reliability indices. After multivariable adjustment, ACCI remained independently associated with lower MD (estimate = −0.52, p = 0.004), higher PSD (estimate = 0.27, p = 0.04), and lower foveal sensitivity (estimate = −0.36, p = 0.01). Lower G8 scores and higher ACCI scores were independently associated with increased FN rates, whereas higher G8 scores were associated with increased FP rates. Conclusions: Systemic comorbidity burden, assessed using ACCI, was independently associated with both glaucomatous functional impairment and selected VF reliability indices. Frailty, assessed using G8, was associated with VF reliability but not VF sensitivity. Although cognitive function measured by Mini-Cog was associated with VF parameters in univariate analyses, these associations were not retained after multivariable adjustment. Consideration of systemic health status and geriatric vulnerability may improve interpretation of VF results in patients with glaucoma. Full article
(This article belongs to the Special Issue Glaucoma: New Diagnostic and Therapeutic Approaches, 3rd Edition)
13 pages, 1221 KB  
Article
Outcomes of the Paul Glaucoma Implant in an Ambispective Multicenter Study: 12-Month Follow-Up
by Celina Logioco, Anahí Lupinacci, Ignacio Lischinsky, Mariel A. Ytques, Gabriel Bercovich, María A. Moussalli, Agustina De Gainza, Mario O. Roux, Nicolás Levaggi, Ana Sanseau, Karina B. Giannone, Arturo Burchakchi, Leila Galetto, Natanael Serrano, Eimi Olivares Sefair, Guillermo Roux and Rodrigo M. Torres
Biomedicines 2026, 14(6), 1230; https://doi.org/10.3390/biomedicines14061230 - 29 May 2026
Viewed by 310
Abstract
Objective: The aim of this study was to evaluate the safety and efficacy of the Paul Glaucoma Implant (PGI) in a multicenter Argentine cohort with 12 months of follow-up. Methods: This ambispective multicenter study included patients who underwent PGI implantation between November 2022 [...] Read more.
Objective: The aim of this study was to evaluate the safety and efficacy of the Paul Glaucoma Implant (PGI) in a multicenter Argentine cohort with 12 months of follow-up. Methods: This ambispective multicenter study included patients who underwent PGI implantation between November 2022 and July 2024 by glaucoma specialists across Argentina, with a minimum follow-up of 12 months. Primary outcomes were intraocular pressure (IOP) reduction and success rates, defined as complete success (≥20% IOP reduction with IOP ≥6 and ≤21 mmHg without medications), qualified success (same criteria with ≥1 medication), and failure based on predefined efficacy and safety criteria, including additional glaucoma surgery, device removal, or clinically significant hypotony. Secondary outcomes included changes in medication use, best-corrected visual acuity (BCVA), and postoperative complications. Results: Sixty-six eyes were included in the overall analysis. Mean IOP decreased from 31.2 ± 9.1 mmHg preoperatively to 12.8 ± 4.7 mmHg at 12 months (p < 0.01). Medications were reduced from 3.5 ± 0.8 to 1.3 ± 1.2 (p < 0.01). Among the 65 eyes with evaluable 12-month follow-up, 50 eyes (76.9%) achieved complete success, 14 (21.5%) qualified success, and 1 (1.5%) failure. Complications were ocular hypertension (25%), tube or plate exposure (10%), choroidal detachment (7%), and hypotony (5%). BCVA remained stable in 28 eyes (43.8%), improved in 15 (23.4%), and worsened in 21 (32.8%). Conclusions: The PGI achieved significant and sustained IOP reduction with marked medication decrease at 12 months. Most complications were mild or moderate. These findings support the PGI as an effective and safe non-valved implant for refractory glaucoma in Latin American populations. Full article
(This article belongs to the Special Issue Glaucoma: New Diagnostic and Therapeutic Approaches, 3rd Edition)
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12 pages, 872 KB  
Article
Possible Effects of Topical Rho-Kinase Inhibitor on Schlemm’s Canal Morphology Parameters
by Aysha Siddika Mukta, Aika Tsutsui, Teruhiko Hamanaka, Sachiko Kaidzu, Kanae Kobayashi, Nobuo Ishida and Masaki Tanito
Biomedicines 2026, 14(2), 470; https://doi.org/10.3390/biomedicines14020470 - 20 Feb 2026
Viewed by 1150
Abstract
Background: To evaluate the effects of preoperative topical ripasudil, a Rho-associated protein kinase (ROCK) inhibitor, on Schlemm’s canal (SC) morphology in patients with primary open-angle glaucoma (POAG). Methods: This study included 95 SC specimens obtained during trabeculectomy from 95 patients with [...] Read more.
Background: To evaluate the effects of preoperative topical ripasudil, a Rho-associated protein kinase (ROCK) inhibitor, on Schlemm’s canal (SC) morphology in patients with primary open-angle glaucoma (POAG). Methods: This study included 95 SC specimens obtained during trabeculectomy from 95 patients with POAG. Based on preoperative treatment, patients were divided into two groups: ripasudil (−) group (n = 68) receiving four topical medications [FP receptor agonist, β-blocker, carbonic anhydrase inhibitor (CAI), and α2 agonist], and ripasudil (+) group (n = 27) receiving the same four medications plus ripasudil. SC morphology parameters were assessed in thrombomodulin (TBM)-stained sections, including length parameters [TBM-positive/negative and opened/closed SC lengths] and area parameters [TBM-positive/negative and opened SC areas]. Between-group comparisons were performed using unpaired t-tests, and multiple regression analysis was conducted to adjust for age, gender, preoperative intraocular pressure (IOP), and oral CAI use. Results: The ripasudil (+) group had significantly longer total SC length (TSC: 302.5 µm) than the ripasudil (−) group (273.0 µm, p = 0.023). Among area parameters, the ripasudil (+) group showed significantly larger opened SC area (OSC-A: 2689 µm2 vs. 1881 µm2, p = 0.008) and TBM-negative opened SC area (NOSC-A: 716 µm2 vs. 305 µm2, p = 0.001), whereas TBM-positive opened SC area (POSC-A) was not significantly different between groups (2001 µm2 vs. 1575 µm2, p = 0.096). After multivariate adjustment, ripasudil use remained significantly associated with longer TSC (p = 0.011) and larger OSC-A (p = 0.014) and NOSC-A (p = 0.001). Conclusions: Preoperative use of topical ripasudil was associated with preservation of SC lumen morphology, particularly in regions lacking SC endothelium. These findings provide a theoretical basis for therapeutic strategies employing ROCK inhibitors to maintain SC morphology and function. Full article
(This article belongs to the Special Issue Glaucoma: New Diagnostic and Therapeutic Approaches, 3rd Edition)
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10 pages, 303 KB  
Article
Real World Comparison of Direct Selective Laser Trabeculoplasty Versus Selective Laser Trabeculoplasty: 12-Month Retrospective Study of a Tertiary Center in the UK
by Piero Zollet, Federico Macario, Rachel Healy, Demetri T. Manasses, Rani T. Sebastian and Mario R. Romano
Biomedicines 2026, 14(1), 156; https://doi.org/10.3390/biomedicines14010156 - 12 Jan 2026
Viewed by 1297
Abstract
Background: Direct selective laser trabeculoplasty (DSLT) is a novel option for intraocular pressure (IOP) control in patients with glaucoma or ocular hypertension. The automated and touchless translimbal delivery of laser energy to 360 degrees of the trabecular meshwork (TM) improves aqueous outflow and [...] Read more.
Background: Direct selective laser trabeculoplasty (DSLT) is a novel option for intraocular pressure (IOP) control in patients with glaucoma or ocular hypertension. The automated and touchless translimbal delivery of laser energy to 360 degrees of the trabecular meshwork (TM) improves aqueous outflow and lowers IOP. DSLT is faster, simpler, and less invasive than routinely performed SLT. Few studies have compared the two techniques. Objective: To retrospectively compare the safety and efficacy of DSLT and SLT over a 1-year follow-up period. Methods: In total, 16 eyes that underwent DSLT and 16 eyes that underwent SLT were included. The primary outcome measures were mean absolute and percent IOP reduction, number of medications, and BCVA at 1, 3, 6, and 12 months. Survival analysis on 1-year data was performed based on the presence of one or more of the following failure criteria: (1) IOP > 21 mmHg or less than 20% reduction in IOP from baseline at two consecutive visits; (2) increase in the number of IOP-lowering drops from baseline at two consecutive visits; (3) further procedures. Results: The survival rates in the DSLT vs. SLT group were 81% vs. 78%, 44% vs. 62%, and 37% vs. 43% at 3, 6, and 12 months, respectively. No statistically significant differences were reported. DSLT does not seem inferior to conventional SLT in terms of safety and efficacy in reducing IOP. Conclusions: The advantages of an automated, rapid, contactless technique may enlarge the cohort of patients eligible for a drop-free first-line IOP control procedure. Full article
(This article belongs to the Special Issue Glaucoma: New Diagnostic and Therapeutic Approaches, 3rd Edition)
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12 pages, 997 KB  
Article
An Exploratory Study of Machine Learning-Based Open-Angle Glaucoma Detection Using Specific Autoantibodies
by Naoko Takada, Makoto Ishikawa, Takahiro Ninomiya, Yukitoshi Izumi, Kota Sato, Hiroshi Kunikata, Yu Yokoyama, Satoru Tsuda, Eriko Fukuda, Kei Yamaguchi, Chihiro Ono, Tomoko Kirihara, Chie Shintani, Akiko Hanyuda, Naoki Goshima, Charles F. Zorumski and Toru Nakazawa
Biomedicines 2025, 13(12), 3031; https://doi.org/10.3390/biomedicines13123031 - 10 Dec 2025
Viewed by 1226
Abstract
Objectives: Previously, we identified four open-angle glaucoma (OAG)-associated autoantibodies (anti-ETNK1, anti-VMAC, anti-NEXN, and anti-SUN1) using proteome-wide autoantibody screening by wet protein arrays. The objective of this exploratory study was to evaluate the diagnostic performance of these four glaucoma-associated autoantibodies using automated machine learning. [...] Read more.
Objectives: Previously, we identified four open-angle glaucoma (OAG)-associated autoantibodies (anti-ETNK1, anti-VMAC, anti-NEXN, and anti-SUN1) using proteome-wide autoantibody screening by wet protein arrays. The objective of this exploratory study was to evaluate the diagnostic performance of these four glaucoma-associated autoantibodies using automated machine learning. Methods: Plasma samples from 119 patients with OAG and 35 patients with cataracts as controls were enrolled for the study. All machine-learning analyses were performed in Python 3.9.16 (GCC 11.2.0) using scikit-learn 1.2.2 and PyCaret 3.0.1. Variables included plasma levels of the autoantibodies, age, sex, and intra-ocular pressure (IOP). Probability calibration (Platt/sigmoid and isotonic) was assessed with reliability curves and Brier scores. Model explainability was examined with permutation importance, SHAP values, and an ablation analysis removing one autoantibody at a time. Results: The tuned random forest achieved an out-of-fold (OOF) area under the receiver-operating characteristic curve (ROC–AUC) of 0.852 (±0.040), an average precision (AP) of 0.950, and an F1 score of 0.865. Isotonic mapping improved agreement between predicted and empirical probabilities. Among these four autoantibodies, VMAC was the most important factor for the model’s prediction. Conclusions: A machine learning model using four autoantibodies from blood samples showed potential for diagnosing OAG. Full article
(This article belongs to the Special Issue Glaucoma: New Diagnostic and Therapeutic Approaches, 3rd Edition)
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16 pages, 1191 KB  
Article
Association of Heart Rate Variability and Acceleration Plethysmography with Systemic Comorbidity Burden in Patients with Glaucoma
by Yuto Yoshida, Hinako Takei, Misaki Ukisu, Keigo Takagi and Masaki Tanito
Biomedicines 2025, 13(9), 2155; https://doi.org/10.3390/biomedicines13092155 - 4 Sep 2025
Viewed by 1262
Abstract
Background: Autonomic nervous system (ANS) and vascular factors are associated with glaucoma. However, the association between systemic comorbidity burden and ANS and hemodynamic function in patients with glaucoma remains unclear. This study aimed to examine the association between heart rate variability (HRV) [...] Read more.
Background: Autonomic nervous system (ANS) and vascular factors are associated with glaucoma. However, the association between systemic comorbidity burden and ANS and hemodynamic function in patients with glaucoma remains unclear. This study aimed to examine the association between heart rate variability (HRV) and acceleration plethysmography (APG) parameters and the age-adjusted Charlson Comorbidity Index (ACCI) in patients with glaucoma. Methods: A total of 260 subjects (260 eyes), including 186 with primary open-angle glaucoma (PG) and 74 with exfoliation glaucoma (EG), were enrolled at Shimane University Hospital from June 2023 to July 2024. HRV and APG were assessed using a sphygmograph (TAS9 Pulse Analyzer Plus View). HRV parameters included time-domain measures (SDNN, RMSSD, CVRR) and frequency-domain measures (TP, VLF, LF, HF, LF/HF). APG parameters included the a, b, c, d, and e components of the accelerated pulse wave, and the following vascular types: Type A, Type B, and Type C. The association between ACCI and HRV and APG parameters was evaluated using Spearman’s rank correlation and multivariate regression adjusted for sex, body mass index, pulse rate, systolic and diastolic blood pressure, intraocular pressure, medication score, mean deviation, and glaucoma type. Results: By univariate analysis, against ACCI, significant inverse correlations were observed for several parameters: LnLF (R = −0.17, p = 0.0062); LnLF/LnHF (R = −0.24, p = 0.00012); b peak (R = −0.14, p = 0.031); d peak (R = −0.17, p = 0.0072); and e peak (R = −0.15, p = 0.015). Regarding HRV parameters, multivariate linear regression models showed that ACCI was significantly positively associated with RMSSD (coefficient: 2.861; 95% CI: 0.447 to 5.274) and significantly negatively associated with the frequency-domain parameters LnLF (coefficient: −0.127; 95% CI: −0.245 to −0.009) and LnLF/LnHF (coefficient: −0.038; 95% CI: −0.062 to −0.014). In APG parameters, the c peak was significant associated with ACCI (coefficient: −12.6; 95% CI: −22.5 to −2.69). ACCI was significantly associated with Type B (coefficient: 0.305; 95% CI: 0.057 to 0.552). Conclusions: Greater systemic comorbidity burden may be related to impaired ANS regulation and increased vascular stiffness in glaucoma patients. Full article
(This article belongs to the Special Issue Glaucoma: New Diagnostic and Therapeutic Approaches, 3rd Edition)
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