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A clinical study of 6mm sutureless clear corneal incision in pre-existing astigmatism of 1D-2D in manual small incision cataract surgery

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Original Article

Author Details : Kavitha Chikkanayakanahalli Venugopal, Lakshmi Bomalapura Ramamurthy, Pavana Acharya, Sahana Raviraj

Volume : 3, Issue : 1, Year : 2017

Article Page : 45-49

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Abstract

Aim: To evaluate the effect of 6mm sutureless clear corneal incision on pre-existing astigmatism of 1D-2D and to compare outcome of superior and temporal incisions, in manual small incision cataract surgery (SICS).
Methods: A prospective interventional study was conducted from January 2015 to July 2015 on 80 patients who underwent manual SICS, with pre-existing astigmatism of 1D-2D on keratometry. A 6mm superior or temporal sutureless clear corneal incision was made along the steep axis. Postoperative follow up was done on 1^st, 3^rd and 6^th week and keratometry values noted in each visit. Final refraction and correction noted at the end of 6 weeks.
Results: Out of 80 patients, 71 had 1D-1.5 D and 9 had 1.5D-2D astigmatism. The mean pre-operative astigmatism was 1.228D±0.32D.
Among 62 cases of with-the rule astigmatism, full correction after surgery was noted in 37 patients (59.67%), partial correction in 19 (30.64%), no change in 6(10%). Among 18 cases of against-the rule astigmatism, 11 had full correction (61.11%) and 6 had partial correction (33.33%) and remained unchanged in 1(5.5%). So the mean post-operative astigmatism was found to be 0.43D±0.35. The astigmatic difference between pre-operative and post-operative astigmatism was found to be statistically significant. (P-value 0.0001).
Peaking of pupil was noted in 3 patients and iris prolapse in two patients, accounting for minor complications in 6.7%. No other complications were observed till 6 weeks.
Conclusion: A 6mm sutureless clear corneal incision on steep axis is an economical and effective way of reducing pre-existing astigmatism of 1D-2D in manual SICS.

Keywords: Astigmatic correction, Clear corneal incision, Manual small incision cataract surgery, Post-operative astigmatism

How to cite : Venugopal K C, Ramamurthy L B, Acharya P, Raviraj S, A clinical study of 6mm sutureless clear corneal incision in pre-existing astigmatism of 1D-2D in manual small incision cataract surgery. Indian J Clin Exp Ophthalmol 2017;3(1):45-49

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