Abstract
Purpose: To determine when the mean central corneal thickness (CCT) returnsto normal values after uneventful phacoemulsification.Material and Methods: This was a prospective case series. The study wascarried out at the Section of Ophthalmology, Department of Surgery, Aga KhanUniversity Hospital, Karachi. Eyes scheduled to undergo phacoemulsificationduring December 2011 – March 2012 were eligible to be included. Eyes withcorneal degenerations, dystrophies or high pre-op astigmatism were excluded. Astructured proforma was used to collect data on sociodemographics, comorbids,visual acuity, and CCT before surgery and 1 day, 1 week and 1 month aftersurgery. Changes in the mean CCT over time were measured using repeatedmeasures Analysis of Variance (ANOVA) was done.Results: Eighty one eyes were included in the study. The mean (±SD) age ofthe participants was 58.30 (± 10.04) years. The majority of them (58.0%) werewomen. Sixty two (76.5%) eyes completed the last follow-up and were includedin the final analysis. The mean CCT was 542.81 ± 34.85 mm before surgerywhich markedly increased to 595.27 ± 43.78 mm 24 hours after surgery, butdecreased to 565.82 ± 38.30 at one week, and returned to normal baselinevalues (544.42 ± 28.95) in almost all operated eyes in 1 month time. There wasno statistically significant difference in the mean CCT before surgery and at 1month (p=0.685).Conclusion: The mean CCT substantially increasing after post-operativeuneventful cataract surgery but returns to normal baseline values in almost alloperated eyes in 1 month time. IOP measured during this period may be falselyhigher than the true values due to increased CCT.Key words: central corneal thickness, phacoemulsification, cataract surgery
Tanveer Anjum Chaudhry, Muhammad Hamza, Wajiha Koomal, Khabir Ahmad. (2015) Central Corneal Thickness Changes after Phacoemulsification, Pakistan Journal of Ophthalmology, Volume 31, Issue 2.
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