| Accuracy of Astigmatic Correction Using Toric Intraocular Lens by Position and Size of Corneal Incision. |
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Wookyung Park, Man Soo Kim, Eun Chul Kim |
1Department of Ophthalmology, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea. eunchol@hanmail.net
2Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea. |
| 각막절개 위치와 크기에 따른 난시교정인공수정체의 난시교정의 정확성 |
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박우경1⋅김만수2⋅김은철1 |
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가톨릭대학교 의과대학 부천성모병원 안과학교실1, 가톨릭대학교 의과대학 서울성모병원 안과학교실2 |
Correspondence:
Eun Chul Kim,
Email: eunchol@hanmail.net
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Received: 21 June 2018 • Revised: 11 September 2018 • Accepted: 18 January 2019 |
| Abstract |
PURPOSE
To assess the accuracy of toric intraocular lens (IOL) implantation by the location and size of the corneal incision. METHODS: We retrospectively reviewed the medical records of 98 patients (98 eyes) who underwent phacoemulsification with toric IOL implantation from January 2014 to March 2017. The patients were divided into two groups: group 1 got an incision of the superior side of the cornea (n = 54) and group 2 received an incision on the temporal side of the eye (n = 44). For both groups, incisions were made at their steep corneal astigmatism axises. Each group was further divided into subgroups for whom different sized blades were employed (2.75 vs. 2.2 mm widths). We measured the refractive index and autokeratometric parameters. We postoperatively assessed residual astigmatism and any reduction thereof. RESULTS: In both groups, uncorrected and best-corrected visual acuity, refraction cylinder astigmatism, and autokeratometric astigmatism improved statistically. Between two groups, corneal astigmatism decrease was not significant. Residual astigmatism also showed no significant differences between the two. Patients in both groups treated using 2.75 mm wide blades exhibited greater increases in corneal astigmatism. CONCLUSIONS: During cataract surgery, precise correction of astigmatism via toric IOL implantation is possible when surgically induced astigmatism is minimized by careful choice of the location and size of the corneal incision. |
| Key Words:
Astigmatism;Intraocular lens |
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