Abstract

Purpose: To assess repeatability of Eyestar 900(ES900)( Haag-streit)in measuring various biometry parameters and its agreement with IOL master 700(IOL-M) (Carl Zeiss, Germany) and Lenstar LS 900(LS900) (Haag-Striet) in eyes with senile cataract.

Methods: 55 eyes underwent scans on ES900, IOL-M and LS-900. Axial length(AL), Keratometry(k1,k2), Astigmatism (AST), anterior chamber depth(ACD), White to White(WTW), Central corneal thickness(CCT), Lens Thickness(LT) were used for comparison. Average readings of the parameters were assessed for repeatability of ES900 and agreement between the 3 biometers using Intraclass correlation(ICC)

Results:
ES900’s repeatability values highly correlated for (AL,K1,K2,AST, ACD, WTW, CCT, LT) – ICC(0.9). Intermachine agreement provided similar strong correlation in AL,K1,K2, AST, CCT, LT- ICC (0.9) & ACD ICC(0.85) but not for WTW- ICC (0.6).

Conclusion: Eyestar 900 can be used interchangeably with the gold standard LS 900 and IOL-M for biometry.