CALCULATING THE SURGICALLY INDUCED REFRACTIVE CHANGE FOLLOWING OCULAR SURGERY

被引：240

作者：

HOLLADAY, JT

CRAVY, TV

KOCH, DD

机构：

[1] Hermann Eye Center, University of Texas Medical School at Houston

[2] Cullen Eye Institute, Baylor College of Medicine, Houston

[3] Cullen Eye Institute, Baylor College of Medicine, Santa Maria, California

来源：

JOURNAL OF CATARACT AND REFRACTIVE SURGERY | 1992年 / 18卷 / 05期

关键词：

CALCULATING SURGICALLY INDUCED CORNEAL ASTIGMATISM; COUPLING RATIO; CROSS CYLINDER SOLUTION; OBLIQUE CYLINDER;

D O I：

10.1016/S0886-3350(13)80095-8

中图分类号：

R77 [眼科学];

学科分类号：

100212 ;

摘要：

Calculating the surgically induced refractive change following ocular surgery is important for evaluating the results of keratorefractive procedures, smaller incisions and various wound closures for cataract surgery, and the effect of suturing techniques and suture removal following corneal transplant surgery. We present a ten-step method of calculating the spherical- and cylindrical-induced refractive change in a manner suitable for a programmable calculator or personal computer. Several applications are given including (1) adding the overrefraction to the spectacle correction, (2) determining the surgically induced refractive change from the preoperative and postoperative refractions, (3) determining the surgically induced refractive change from the K-readings, (4) rotating axes, (5) determining the power at meridians oblique to the principal meridians of a spherocylinder, (6) determining the coupling ratio, and (7) averaging axes. Standard methods for calculating and reporting aggregate results are also given.

引用

页码：429 / 443

页数：15

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