Incidence and Outcomes of Dropped Nucleus After Phacoemulsification Cataract Surgery Between 2020 and 2024
Abstract
1. Introduction
2. Methods
2.1. Study Design
2.2. Inclusion and Exclusion Criteria
2.3. Demographics and Clinical Characteristics
2.4. Study Outcomes
2.5. Statistical Analysis
3. Results
3.1. Baseline Demographics
3.2. Co-Pathologies and PCR Risk Factors
3.3. Postoperative Factors Affecting Visual Outcome
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Abbreviations
| NHS | National Health Service |
| UK | United Kingdom |
| CMO | Cystoid macular oedema |
| RD | Retinal detachment |
| EMR | Electronic medical records |
| PPV | Pars plana vitrectomy |
| VA | Visual acuity |
| IOP | Intraocular pressure |
| PCR | Posterior capsular rupture |
| AL | Axial length |
| PXF | Pseudoexfoliation syndrome |
| LA | Local anaesthesia |
| BDVA | Best distance visual acuity |
| IOL | Intraocular lens |
| CDE | Cumulative dissipated energy |
| AC | Anterior Chamber |
| EUREQO | European Registry of Quality for Cataract Outcomes |
| NOD | National Ophthalmology Database |
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| Demographics | Total (N = 175 Eyes) | Good Visual Outcome BDVA ≥ 6/12 (N = 127 Eyes) | Poor Visual Outcome BDVA < 6/12 (N = 48 Eyes) | p Value * |
|---|---|---|---|---|
| Age in years, mean (range) | 71 (45–94) | 72 (45–94) | 70 (55–89) | 0.373 |
| Gender, n (%) | ||||
| Male | 99 (56.6%) | 77 (60.6%) | 22 (45.8%) | 0.089 |
| Female | 76 (43.4%) | 50 (39.4%) | 26 (54.2%) | |
| Operated eye, n (%) | ||||
| Left | 92 (52.6%) | 64 (50.4%) | 28 (58.3%) | 0.398 |
| Right | 83 (47.4%) | 63 (49.6%) | 20 (41.7%) | |
| First | 132 (75.4%) | 93 (73.2%) | 39 (81.3%) | 0.328 |
| Second | 43 (24.6%) | 34 (26.8%) | 9 (18.8%) | |
| Co-Pathologies and PCR Risk Factors, n (%) | Total (N = 175 Eyes) | Good Visual Outcome (N = 127 Eyes) | Poor Visual Outcome (N = 48 Eyes) | p Value Fisher’s Exact and X2 Test |
|---|---|---|---|---|
| Inability to lie flat | 4 (2.3%) | 2 (1.6%) | 2 (4.2%) | 0.302 |
| Axial length ≥ 26 mm | 18 (10.3%) | 12 (9.4%) | 6 (12.5%) | 1.000 |
| Hypermature cataract | 70 (40.0%) | 42 (33.1%) | 28 (58.3%) | 0.003 * |
| Diabetes mellitus | 88 (50.3%) | 66 (52.0%) | 22 (45.8%) | 0.501 |
| Previous/current α receptor blocker use | 20 (11.5%) | 15 (11.9%) | 5 (10.4%) | 1.000 |
| Glaucoma | 21 (12.0%) | 16 (12.6%) | 5 (10.4%) | 0.799 |
| No fundal view | 46 (26.3%) | 29 (22.8%) | 17 (35.4%) | 0.123 |
| PXF +/− phacodonesis | 21 (12.0%) | 19 (15.0%) | 2 (4.2%) | 0.066 |
| Previous ocular trauma | 2 (1.1%) | 1 (0.8%) | 1 (2.1%) | 0.474 |
| Dementia under LA | 1 (0.6%) | 0 (0%) | 1 (2.1%) | 0.274 |
| Previous intravitreal injection | 10 (5.7%) | 7 (5.5%) | 3 (6.3%) | 1.000 |
| Previous PPV | 10 (5.7%) | 7 (5.5%) | 3 (6.3%) | 1.000 |
| Complicated surgery | ||||
| Small pupil | 15 (8.6%) | 10 (7.9%) | 5 (10.4%) | 0.771 |
| Medium pupil | 30 (17.1%) | 23 (18.1%) | 7 (14.6%) | |
| Large pupil | 130 (74.3%) | 94 (74.0%) | 36 (75.0%) | |
| Surgeon grade | ||||
| Post-graduate resident/fellow surgeon | 113 (64.6%) | 83 (65.4%) | 30 (62.5%) | 0.727 |
| Consultant surgeon | 62 (35.4%) | 44 (34.6%) | 18 (37.5%) | |
| Postoperative Outcomes | Total (N = 175 Eyes) | Good Visual Outcome (N = 127 Eyes) | Poor Visual Outcome (N = 48 Eyes) | p Value * |
|---|---|---|---|---|
| Days to PPV +/− fragmatome, median (range) | 5 (0–27) | 5 (0–27) | 5 (1–17) | 0.879 |
| Total number of operations, median (range) | 2 (1–5) | 2 (1–5) | 2 (1–4) | 0.892 |
| Glaucoma surgery, n (%) | 4 (2.3%) | 3 (2.4%) | 1 (2.1%) | 1.000 |
| Retinal detachment surgery, n (%) | 4 (2.3%) | 2 (1.6%) | 2 (4.2%) | 0.302 |
| Corneal graft surgery, n (%) | 1 (0.6%) | 1 (0.8%) | 0 (0%) | 1.000 |
| Final IOP, median (range) | 13 (5–57) | 13 (5–57) | 13 (5–28) | 0.867 |
| Amount of nucleus dropped, n (%) | ||||
| Entire crystalline lens | 51 (29.1%) | 36 (28.3%) | 15 (31.3%) | 0.713 |
| Partial lens fragment | 124 (70.9%) | 91 (71.7%) | 33 (68.8%) | |
| Endophthalmitis, n (%) | ||||
| No | 175 (100%) | 127 (100%) | 48 (100%) | Not applicable |
| Yes | 0 (0%) | 0 (0%) | 0 (0%) | |
| Age | Anterior Capsule Intact | No Capsular Support |
|---|---|---|
| <60 years | 3-piece IOL with optic-capture |
|
| ≥60 years with good endothelial cell count | 3-piece IOL with optic-capture |
|
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Halim, J.; Micheletti, E.; Dari, M.-L.; Mandal, N.; Khan, S.R. Incidence and Outcomes of Dropped Nucleus After Phacoemulsification Cataract Surgery Between 2020 and 2024. J. Clin. Transl. Ophthalmol. 2025, 3, 26. https://doi.org/10.3390/jcto3040026
Halim J, Micheletti E, Dari M-L, Mandal N, Khan SR. Incidence and Outcomes of Dropped Nucleus After Phacoemulsification Cataract Surgery Between 2020 and 2024. Journal of Clinical & Translational Ophthalmology. 2025; 3(4):26. https://doi.org/10.3390/jcto3040026
Chicago/Turabian StyleHalim, Jonathan, Eleonora Micheletti, Maria-Laura Dari, Nakul Mandal, and Sharmina R. Khan. 2025. "Incidence and Outcomes of Dropped Nucleus After Phacoemulsification Cataract Surgery Between 2020 and 2024" Journal of Clinical & Translational Ophthalmology 3, no. 4: 26. https://doi.org/10.3390/jcto3040026
APA StyleHalim, J., Micheletti, E., Dari, M.-L., Mandal, N., & Khan, S. R. (2025). Incidence and Outcomes of Dropped Nucleus After Phacoemulsification Cataract Surgery Between 2020 and 2024. Journal of Clinical & Translational Ophthalmology, 3(4), 26. https://doi.org/10.3390/jcto3040026

