ISSN 2348-313X (Print) International Journal of Life Sciences Research ISSN 2348-3148 (online) Vol. 9, Issue 1, pp: (22-26), Month: January - March 2021, Available at: www.researchpublish.com
A RETROSPECTIVE STUDY ON CORRECTION OF REFRACTIVE STATUS AND VISUAL OUTCOMES AFTER TORIC IOL IMPLANTATION IN PRE-EXISTING CORNEAL ASTIGMATISM 1
Miss Rashmi Mahant, 2Miss Divya Sharma
1
Optometry Department, Masters in Optometry, Shri Rawatpura Sarkar, University Raipur Chhattisgarh. E.mail- rashmimersa786@gmail.com 2
Assistant Professor (Optometry) Shri Rawatpura Sarkar University, Raipur Chhattisgarh. E.mail- sru.optmdivya@gmail.com
Abstract: The objective of this study was to evaluate the outcome and correction of pre-existing corneal astigmatism after Toric IOL implantation in patients undergoing cataract surgery [4]. Design: Retrospective case study [22] Material And Method: In this retrospective study, we included 150 eyes of 150 patients; with cataract and regular corneal astigmatism between 1.50 to 3.50 D. Phacoemulsification was performed with Toric IOL implantation through 2.8mm clear corneal temporal incision [4]. Studied parameters before and after surgery included uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA) & residual refractive astigmatism [6]. Results: Preoperatively UCVA was 20/200 or less in 80 eyes (53.33%), 20/125 to 20/80 in 50 eyes (33.33%), 20/63 to 20/40 in 20 eyes (13.33%). Postoperatively UCVA was 20/80 in 12 eyes (8.00%), 20/63 to 20/40 in 103 eyes (68.66%), 20/32 to 20/25 in 35 eyes (23.33%). All eyes had 20/20 BCVA (100%). Preoperatively, 30 eyes have -1.50 to -1.75D. Astigmatism (20%), 50 eyes had -2.00 to -2.50D. Astigmatism (33.33%), 70 eyes had -3.00 to -3.50D. Astigmatism (46.66%). Postoperatively, 90 eyes had -0. 50D. Astigmatism (60%), 40 eyes had -0. 75D. Astigmatism (26.66%) and 20 eyes had -1. 00D. Astigmatism (13.33%) [8]. Conclusion: Toric IOL’s allow correction of astigmatism without compromising the integrity of the cornea. They provide predictable results and can reduce healing times as there is less surgical impact on the cornea. Toric IOL implantation is an effective and safe surgical option to manage pre-existing corneal astigmatism during cataract surgery [4]. Keywords: Corneal astigmatism, Cataract, Toric Intraocular Lens.
1. INTRODUCTION This study evaluated the results after implantation of Toric intraocular lenses to correct pre-existing corneal astigmatism in patients undergoing cataract surgery [12]. Pre-existing corneal astigmatism is an important limiting factor for optimal results of cataract surgery in a number of patients. It has been estimated that 15% to 29% of patients with cataract have more than 1. 50D of pre-existing
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