FP77

Comparing parameters of Ocular biometry with Pentacam, IOL master700, AS-OCT & Specular Microscopy

Purpose: To compare CCT between Pentacam, IOL master 700, AS-OCT & specular microscopy. To compare anterior chamber depth(ACD), White to White(WTW) and Keratometric(K) values obtained by Pentacam with those from IOL master 700.
Methods: 200 healthy eyes were assessed by 4 different techniques for central corneal thickness: Pentacam, IOL master 700, AS OCT and Specular microscopy and were assessed for ACD, WTW and K values using Pentacam and IOL master 500.
Patients with pterygium, severe Dry eyes, Conjunctival/limbal/scleral discolouration  & Corneal opacities were not included.
Results: Differences of Mean CCT were statistically significant between all the 4 techniques of investigation. Pentacam and IOL Master 700 have the closest agreement, according to Bland-Altman plots and specular microscopy had the poorest agreement. In terms of ACD and mean keratometric values no statistical difference was noted between these devices. WTW however appeared to be significantly different.