Purpose: To evaluate outcomes of manual small-incision cataract surgery (MSICS) and phacoemulsification in eyes with chorioretinal coloboma.
Setting: Tertiary eye center, South India.
Design: Retrospective study.
Methods: Electronic medical records of 71 patients with chorioretinal coloboma undergoing cataract surgery from January 2017 to December 2019 were evaluated. Demographics, corrected distance visual acuity (CDVA), slitlamp biomicroscopy findings, grade of cataract, type of coloboma and associated posterior segment pathology, outcomes of different surgical techniques and risk factors for poor visual outcomes, and intraoperative complications were analyzed.
Results: Among the 78 eyes studied, 53.9% eyes achieved visual outcome of 20/40 or greater and 20.5% eyes achieved CDVA less than 20/200. For the MSICS group, the median preoperative CDVA was 1.78 (interquartile range [IQR] 1.08 to 2.60) logMAR), which improved to 0.60 (IQR 0.30-1.08) logMAR postoperatively. In phacoemulsification group, the CDVA improved from 0.78 (IQR 0.60-1.00) logMAR to 0.18 (IQR 0.18-0.30) logMAR. Statistically significant visual improvement was noticed in both groups (P < .001 in both). However, eyes that underwent phacoemulsification showed better visual recovery (P < .001). The mean age at presentation was 49.7 ± 10.8 years. MSICS was the most commonly performed surgery (61.54%), and 62 eyes had uneventful cataract surgery. Twelve eyes in MSICS group and 4 eyes in phacoemulsification group had intraoperative complications. Poor visual outcome was associated with male sex, microcornea, hard cataracts, and macular involvement of coloboma.
Conclusions: MSICS is an alternative to phacoemulsification in colobomatous eyes with advanced cataract. Hard cataract and microcornea were risk factors for intraoperative complications. Significant postoperative improvement in CDVA was noticed in both macula involved and macula not involved groups.
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