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Simulation study of intraocular lens power calculation before and after LASIK Masaya Nishio 1 , Fumio Akashi 2 , Kazue Sorimachi 2 , Yasuo Imai 1 , Naomi Matoba 2 , Yuichi Yamada 1 , Makoto Chikuda 1 1Dept of Ophthalmol,Dokkyo Medical Univ Koshigaya Hosp 2Shin-koshigaya Eye Clin pp.393-397
Published Date 2007/3/15
DOI https://doi.org/10.11477/mf.1410101566
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Abstract. Purpose:To report the outcome of simulated calculation for the error of intraocular lens(IOL)in eyes with previous LASIK. Objects and Method:A total of 134 eyes treated by LASIK served as material for simulation study. They were calculated for adequate IOL power by using keratometric values before and after LASIK. The formula SRK/T was used throughout. Results:IOL power calculated based on post-LASIK values was smaller by 2.25 diopters than that based on pre-LASIK ones. The refractive error shifted by 1.93 diopters on the spectacle lens. Error in IOL power calculation was positively correlated with the refraction before LASIK and induced changes by LASIK. Conclusion:IOL power is underestimated when calculated by data after LASIK. Hyperopic shift is greater in eyes receiving greater amount of ablation by LASIK.


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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