ASTIGMATIC OUTCOME OF SUPERIOR VERSUS TEMPORAL CLEAR CORNEAL INCISION IN PHACOEMULSISFICATION

Dr. Manzoor Qadir Keng, DR Rimsha Sarosh, Dr Tufela Shafi, Dr. Omar M S

Abstract


Aims: To compare surgically induced astigmatism after phacoemulsification with foldable intraocular lenses between superior clear corneal and temporal clear corneal incision.

Settings and Design:          Prospective study carried out in a tertiary health care centre inNorth India.

Methods and Material: 100 patients underwent phacoemulsification through clear corneal incision, and were randomly assigned to undergo surgery either through temporal approach or through superior approach (50 in each group). Pre and postoperative visual acuity and astigmatism was analyzed in each group and the surgically induced astigmatism was compared between the two groups.

Results:    In the superior incision group, BCVA of 6/6 was attained by 80% patients as compared to 84% in the temporal incision group. Mean preoperative astigmatism was 0.89% D in the superior incision group which changed to 1.035D postoperatively. Whereas in the temporal incision group mean preoperative astigmatism was 0.745D which changed to 0.575D postoperatively. The mean surgically induced astigmatism in the superior incision was 1.08D and that in the temporal incision group was 0.43D.

Conclusion:      Temporal clear corneal incisions induced less astigmatic change as compared to superior clear corneal incisions and hence are more suitable for astigmatically neutral eyes as well as those with low preoperative astigmatism.


Keywords


Surgically induced astigmatism, phacoemulsification, superior clear corneal incision, temporal clear corneal incision.

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