Dr. Prateek Nishant

Dr. AMIT RAJ, DR. PRABHAKAR SINGH, DR. PRAGATI TIWARI

Abstract

Purpose: To compare reduction in total corneal astigmatism (ΔTK) after opposite clear corneal incisions (OCCI) on steep meridian (Group 1), and conventional single main port incision on steep meridian (Group 2) in patients undergoing phacoemulsification with monofocal non-toric PC-IOL implantation.

Methods: 34 cataractous eyes underwent phaco with PCIOL. OCCI were made in 17 eyes with pre-op ΔTK >1D (Group 1). Residual ΔTK was measured by IOLMaster 700 at post-operative week 1 and month 1.

Results: Mean pre-op ΔTK was 1.48±0.48D in Group 1 and 0.77±1.4D in Group 2. Post-op ΔTK at week 1 was 1.02±0.47D and 0.44±0.15D, and at one month 0.91±0.49D and 0.54±0.14D in the two groups respectively (p<0.00001). Correction of 0.57±0.44D was found in Group 1 and 0.23±0.02D in Group 2 (p=0.00169). Conclusion: OCCI on steep axis is useful to correct corneal astigmatism and has an enhanced effect compared to a single clear corneal incision with no need for particular skill or additional instruments.

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