FP604

Correlation Of OBL With Corneal Biomechanics And Densitometry In SMILE With Visumax 800 For Myopia

Purpose: To evaluate correlation of OBL With corneal biomechanics And densitometry in SMILE With Visumax 800 for Myopia
Methods:CORVIS-ST, Pentacam-HR done.OBL was graded from 0-100%.CBI, TBI, densitometry and POD 1 OSI were correlated with OBL.Pearson correlations were found.
Results:Two hundred eyes with S.E of -4.98±2.63 D were evaluated.The mean OBL grade(in %age) was 57.61±18.88% (15-80%).The mean values of densitometry, CBI, TBI and post-op OSI were 18.28±1.51, 0.41±0.26, 0.23±0.23 and 1.70±0.98 respectively. A significant positive correlation was found between OBL with pre-op densitometry, R- score=0.286, p <0.001 & post-op OSI score, R-score=0.413, p<0.001.A significant negative correlation of OBL with CBI was observed, R-score= -0.224, p=0.03. With TBI, a negative correlation of OBL was observed, however,the result was not statistically significant, R-score= -0.140,p=0.19.
Conclusions:Based on these results, existing nomograms for energy & spot settings in SMILE may be revised