Dr. Om Prakash, O05038, Dr. Sangeeta
30 eyes of 30 patients were included in study to evaluate the effect of 3.2 mm, clear corneal incision at the pre-marked steep meridian, in patients having ≤ 1.0 D corneal astigmatism, undergoing phacoemulsification cataract surgery. Primary outcome measures studied were change in the preoperative astigmatism and surgically induced astigmatism (SIA) . Patients were grouped into Superior, supero-temporal, temporal group, according to location of surgical incision and were reassessed post-operatively at week 1, 2, 4, 6 and 8 for astigmatism by using automated keratometry and SIA.
Mean changes in amount of astigmatism (correction) in superior group, supero-temporal group, temporal group were 0.14D, 0.20D and 0.33D respectively and SIA was 0.74@124, 0.42@70, and 0.62@94 respectively. SIA was maximum in superior group followed by temporal group and least in supero-temporal group .
a steep meridian, 3.2 mm corneal incision can be used to modulate pre-existing astigmatism in cataract patients