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Errors of refraction following intraocular lens implantation Sinji Kohama 1 , Kenji Matsuo 1 , Masato Honbou 1 , Norio Miyata 1 1Miyata Eye Hosp. pp.1835-1839
Published Date 1990/11/15
DOI https://doi.org/10.11477/mf.1410900444
  • Abstract
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We evaluated the predictability of postoperative state of refraction following intraocular lens im-plantation in 243 eyes as calculated by SRK for-mula. The series consisted of 208 eyes with normal axial length between 22 and 25 mm and of 35 eyes with longer axial length between 26 and 28.5 mm.

In eyes with normal axial length, the actual refraction exceeded the predicted one by 0.397± 0.585D. The deviation was within ±0.5D in 81. 7%, ±1.0D in 87.5% and ±1.5 D in 97.1% of the eyes. The amount of refractive error (y) was ininverse proportion to the axial length (x) : y=- 17x +4.37. The actual postoperative refraction (Y) and the predicted one could be expressed by the formula: Y=1.46X + 0.75.

In eyes with elongated axial length, the actual postoperative refraction exceeded the predicted one by 0.078±0.871 D. The amount of deviation was within±0.5 D in 62.9%,±1.0 D in 80.0% and±1.5 D in 88.6%. The refractive error (y) was in inverse proportion to the axial length (x) : y=-0.044x + 1.103.


Copyright © 1990, 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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