Comparative Evaluation of Macular Changes using Optical Coherence Tomography (OCT) following uneventful Cataract Surgery and Cataract Surgery Complicated with Posterior Capsule Rent - A Case- Control Study
Journal Title: International Journal of Contemporary Medical Research - Year 2018, Vol 5, Issue 12
Abstract
Introduction: The World Health Organization estimates that the current global prevalence of blindness is 0.57% (range: 0.2%–1%), with more than 82% of all blindness occurring in individuals aged 50 and older. 3.8 million persons become blind from cataract each year in India. The aim of the current study was to determine macular thickness changes after uncomplicated cataract surgery and in cataract surgery complicated with posterior capsule rent using spectral domain optical coherence tomography (OCT). Material and Methods: This was a prospective casecontrol study. Out of 60 patients, 30 patients complicated by posterior capsular rent were taken as cases on a continuance basis and 30 patients of uncomplicated cataract surgery as controls as a convenience non random sampling method. OCT measurements were performed before surgery and postoperatively at day 1, week 1 and 6. Post operatively, slit lamp examination was done on the first day and in further follow ups. BCVA was recorded using Snellen’s chart on the post-operative 1st day, 1st week and 6th week. This was later converted to LogMAR visual acuity for statistical analysis. Results: CME was diagnosed when there was increase in central macular thickness by more than or equal to 40% increase from baseline. 2 patients in controls (Group 1) had an increase of central macular thickness by 16% from baseline but none of the patients in controls (Group 1) developed CME. Out of the 30 patients in cases (Group 2), 4 patients developed CME changes. Conclusion: Mean macular thickness values measured using OCT were found to be significantly high in eyes which underwent cataract surgery complicated with posterior capsule rent when compared to the eyes which underwent uneventful cataract surgery.
Authors and Affiliations
Battula Yallamanda Babu Rao, Vairagyam Rajalingam, Pachalla Sai Rupa Sree
Keywords
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