Abdul Majeed Malik, Muhammad Farooq Hyder, Tariq Shakoor, Abdul Rafe, Omar Zafar, Ali Rauf.
Comparison of Post-surgical Astigmatism Induced by Phacoemulsification through 2.75mm Incision on Steep Axis versus Scleral Tunnel Incision.
Pak J Med Health Sci Jan ;6(3):710-2.

Purpose: To compare post-surgical astigmatism induced by phacoemulsification through 2.75mm clear corneal incision at steep axis versus superior scleral tunnel incision. Type of study: Quasi-experimental Sampling technique: Non-Randomized consecutive sampling. Materials and methods: This quasi-experimental study was performed on 180 eyes of 180 patients of cataract reporting at Eye Department, CMH, Lahore from Oct 2011 to July 2012 who had pre-existing corneal astigmatism. They were randomly assigned to two groups: Group A, 2.75mm clear corneal incision at steep axis group, and Group B, the superior scleral tunnel incision group. SPSS 17 Results: Induced refractive change caused by corneal incision at steep axis showed an overall improvement in pre-operative astigmatism with minimum level of significance while post-surgical astigmatism induced by scleral tunnel incision was found out to be minimal with a good visual rehabilitation. Conclusion: Corneal incision at steep axis is an effective technique to reduce pre-operative astigmatism while scleral tunnel technique is suitable in cases where minimal change in pre-operative astigmatism is targeted.

PakMediNet -Pakistan's largest Database of Pakistani Medical Journals - http://www.pakmedinet.com