Dr. Adrian Braganza, B09182, Dr. Nikita Shah, Dr. Aarti Heda, Dr. Priya Subbiah
METHODS: 40 patients with pre- existing against the rule astigmatism >1.0 D were randomized into two groups. Conventional OCCI was made on steep axis marked based on keratometric astigmatism measured by pentacam and correlated with IOL master using 3.2mm keratome in 20 patients(GROUP A) and non penetrating OCCI (GROUP B) which was ¾ th depth in cornea was made in 20 patients. . BCVA, pentacam and corvis were recorded for all patients pre-operatively and 1 month post-operatively.
RESULTS: Using keratometric findings, mean astigmatism which was 1.5 (+/-0.7 SD and it reduced to 0.6 .(+/-0.25 SD )post operatively in group A. mean astigmatism was 1.4 D (+/-0.3 SD;and it decreased to 0.7(+/-0.2 SD D post-operatively) in the OCCI group B.In group A the deformation amplitude was 1.0065 pre-operatively ,1.2 post-operatively at 1 month. In group B the deformation amplitude was 1.001 pre-operatively ,1.16 post-operatively at 1 month which was statistically significant.
CONCLUSIONS:There was a statistically significant reduction in astig