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Formula of intraocular lens power calculation for cataract surgery in eyes with prior corneal refractive surgery Wu Guoen 1 , Xie Lixin 1 , Liu Houcang 1 , Ying Liang 1 1Institute of Ophthalmology & Eye Hospital, Shandong Academy of Medical Science pp.1429-1432
Published Date 2001/7/15
DOI https://doi.org/10.11477/mf.1410907443
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Postoperative hyperopia frequently follows after cataract surgery in eyes with prior corneal refractive surgery when the power of intraocular lens (IOL) is calculated by SRK II formula. We designed a new formula: Pc=P+P' which is intended to induce emmetropia and which was modified from SRK II based on the surgical outcome of 4 eyes with prior corneal refractive surgery. Our initial formula used P'=P1-P2.P1 and P2 are values calculated by SRK II before and after corneal refractive surgery respectively. We modified it to a new formula P'=C (K1-K2), in which K1 and K2 stand for the corneal refractive power before and after refractive surgery.A more accurate postoperative refraction was obtained by using our Pc=P+P'formula.


Copyright © 2001, 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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