Purpose: To determine when the mean central corneal thickness (CCT) returns to normal values after uneventful phacoemulsification. Material and Methods: This was a prospective case series. The study was carried out at the Section of Ophthalmology, Department of Surgery, Aga Khan University Hospital, Karachi. Eyes scheduled to undergo phacoemulsification during December 2011 – March 2012 were eligible to be included. Eyes with corneal degenerations, dystrophies or high pre-op astigmatism were excluded. A structured proforma was used to collect data on sociodemographics, comorbids, visual acuity, and CCT before surgery and 1 day, 1 week and 1 month after surgery. Changes in the mean CCT over time were measured using repeated measures Analysis of Variance (ANOVA) was done. Results: Eighty one eyes were included in the study. The mean (±SD) age of the participants was 58.30 (± 10.04) years. The majority of them (58.0%) were women. Sixty two (76.5%) eyes completed the last follow-up and were included in the final analysis. The mean CCT was 542.81 ± 34.85 mm before surgery which markedly increased to 595.27 ± 43.78 mm 24 hours after surgery, but decreased to 565.82 ± 38.30 at one week, and returned to normal baseline values (544.42 ± 28.95) in almost all operated eyes in 1 month time. There was no statistically significant difference in the mean CCT before surgery and at 1 month (p=0.685). Conclusion: The mean CCT substantially increasing after post-operative uneventful cataract surgery but returns to normal baseline values in almost all operated eyes in 1 month time. IOP measured during this period may be falsely higher than the true values due to increased CCT
Pakistan Journal of Ophthalmology
(2015). Entral corneal thickness changes after phacoemulsification. Pakistan Journal of Ophthalmology, 31(2), 68-71.
Available at: http://ecommons.aku.edu/pakistan_fhs_mc_surg_surg/346