| Effects of Axial Length and Vitrectomy on Refractive Error after Cataract Surgery Using SRK/T Formula. |
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Min Kyu Lee, Kyu Yeon Hwang, Man Soo Kim |
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Department of Ophthalmology and Visual Science, The Catholic University of Korea School of Medicine, Seoul, Korea. mskim@catholic.ac.kr |
| 안구 길이와 유리체절제술이 SRK/T 공식의 굴절 오차에 미치는 영향 |
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이민규⋅황규연⋅김만수 |
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Department of Ophthalmology and Visual Science, The Catholic University of Korea School of Medicine, Seoul, Korea |
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| Abstract |
PURPOSE
To investigate the error tendency between preoperative target diopter and postoperative manifest refraction in cataract surgery cases and the effect of axial length and vitrectomy on refractive error (RE). METHODS: We retrospectively studied 90 eyes of 90 patients who underwent cataract surgery. The power of intraocular lens (IOL) was calculated by SRK/T formula. Patients were devided into four groups based on axial length (AXL) and the past history of vitrectomy. RESULTS: The mean of RE showed no significant difference between groups. But an increasing AXL was associated with increased myopic shift with normal range AXL (< or =24.4 mm) (r = -0.502, p = 0.005) and increased hyperopic shift with long AXL (>24.4 mm) (r = 0.718, p < 0.001). In vitrectomized eyes, it showed no significant refractive shift with both normal range and long AXL. CONCLUSIONS: When determining IOL power using SRK/T formula in nonvitrectomized eyes, postoperative refractive shift based on axial length should be considered. |
| Key Words:
Axial length;Cataract surgery;Effective lens position;Refractive error;Vitrectomy |
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