REFRACTIVE POWER CALCULATIONS FOR INTRAOCULAR LENSES IN THE PHAKIC EYE
REFRACTIVE POWER CALCULATIONS FOR INTRAOCULAR LENSES IN THE PHAKIC EYE
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DOI：
10.1016/s0002-9394(14)71745-3
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发表时间：
1993-07-15
影响因子：
4.2
通讯作者：
HOLLADAY, JT
中科院分区：
文献类型：
--
作者：
HOLLADAY, JT
为了矫正严重的屈光不正并避免戴厚眼镜或隐形眼镜，可以将人工晶状体放置在正常晶状体前面的前房中，作为角膜屈光手术的替代方案。人工晶状体的屈光力可以根据接受者的眼镜矫正、其顶距和以屈光度为单位的角膜屈光力来确定。这些测量结果与基于其在前房内位置的人工晶状体常数相结合，提供了适当的人工晶状体屈光力。这些公式应用于有晶状体眼中的七个 Baikoff 前房晶状体和三个 Momose 前房晶状体。 Baikoff 镜片的平均绝对预测误差为 0.42（标准偏差，+/- 0.60），而 Momose 镜片的平均绝对预测误差为 0.57（+/- 0.64）。测量的准确性受到术前屈光度的准确性、角膜屈光力的测量以及角膜术前屈光力的恢复的限制。
To correct a severe refractive error and obviate thick spectacles or contact lenses, an intraocular lens can be placed in the anterior chamber in front of the normal crystalline lens as an alternative to keratorefractive procedures. The power of the intraocular lens may be determined from the recipient's spectacle correction, its vertex distance, and the corneal power in diopters. These measurements, combined with an intraocular lens constant based on its location within the anterior chamber, provide the appropriate power of the intraocular lens.These formulas were applied to seven Baikoff anterior chamber lenses and three Momose anterior chamber lenses in phakic eyes. The mean absolute prediction error was 0.42 (standard deviation, +/- 0.60) for the Baikoff lenses and 0.57 (+/- 0.64) for the Momose lenses. The accuracy of the measurements is limited by the accuracy of the preoperative refraction, the measurement of the corneal power, and the restoration of the preoperative refractive power of the cornea.