Dr.Vidya Naik, N16811
AIM-Keratometry methodology varies between instruments and the differences may potentially have a clinical impact. We investigated the agreement of 5 keratometry instruments
METHODS: Subjects aged between 20-40 years with BCVA of 6/9 & better included. Any history of ocular surgery, ocular disease, systemic disease, contact lens use were excluded. Corneal curvature (K1,K2) was measured by IOL Master 500, IOL Master 700, Hoya I trace, Sirius & Wavelight Allegro topolyzer. One way ANOVA & Tukey post hoc used for analysis
RESULTS: 36 eyes of 18 patients with mean age of 21.67± 4.1years were analyzed. The mean IOP was 14.72±1.89 mm Hg. One way ANOVA revealed non significant difference in magnitude of corneal curvature (K1: F=1.28,p=0.28;K2: F=1.21,P=0.31) among 5 instruments. Tukey post hoc analysis showed that corneal curvature obtained using five instruments are similar.
Conclusion: Corneal curvature obtained using above five instruments are statistically and clinically comparable.
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