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Refractive error after cataract surgery in eyes with Avellino corneal dystrophy treated by photorefractive keratectomy Makoto Takaki 1 , Hiroshi Suyama 1 , Mamoru Nakamura 1 , Ritsuko Fujiwara 1 1Dept of Ophthalmol, Asagiri Hosp pp.1699-1703
Published Date 2007/9/15
DOI https://doi.org/10.11477/mf.1410101929
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Abstract. Purpose:To evaluate refractive errors after cataract surgery in eyes with previous history of photorefractive keratectomy. Cases and Method:This retrospective study was made on 30 eyes who had received photorefractive keratectomy for Avellino corneal dystrophy. Predicted values of refractive index were calculated in 9 ways, including formulas of SimK, ring 3, True Net Power(TNP). Power of intraocular lens was calculated by SRKⅡ, SRK/T, and Holladay 1. Differences between the predicted and actual postoperative refraction were regarded as refractive errors. Results:Combination of TNP and Holladay 1 showed a minimum refractive error of -0.26±1.31 diopters. Combination of ring 3 and SRK/T showed a minimum fluctuation of error at +2.31±0.47 diopters. Conclusion:Above results show that combination of ring 3, SRK/T and revised IOL power calculation is to be preferred in the calculation of IOL power in eyes after photorefractive keratectomy. TNP has a potential to reduce fluctuation errors.


Copyright © 2007, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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