Chief & Presenting Author: Dr.Shritu Shail

Co Author(s): Dr.Gaurav Luthra, Dr.Kumar Anshuman

Abstract

Retrospective Cross Sectional Study.Purpose: To compare white to white (WTW) measurements obtained from different devices and its effect in determining the correct size of ICL by measuring post operative vault size.Results: WTW measure was compared with the measures obtained by the caliper, which served as the basis for our final selection. Mean WTW varied significantly. Pentacam WTW with mean 11.81 mm was most comparable to Caliper mean WTW of 11.59mm. The highest value was with Lenstar with mean 12mm followed by Pentacam and I Trace Conclusion: Although several parameters have been used to calculate ICL size to get desired post operative vault, WTW still remains the most preferred and values obtained from these machines were compared to see which one of these yielded a consistent and interchangeable result. The Pentacam WTW yielded an ICL size similar to Caliper in 86.66% eyes while the Lenstar and I trace yielded an ICL similar in 71 % and 66.6% eyes respectively.