COMPARISON OF THE ACCURACY OF COMPUTERIZED VIDEOKERATOGRAPHY AND KERATOMETRY FOR USE IN INTRAOCULAR-LENS CALCULATIONS

被引：33

作者：

CUAYCONG, MJ ^{[1
]}

GAY, CA ^{[1
]}

EMERY, J ^{[1
]}

HAFT, EA ^{[1
]}

KOCH, DD ^{[1
]}

机构：

[1] CULLEN EYE INST,6501 FANNIN,NC-200,HOUSTON,TX 77030

来源：

JOURNAL OF CATARACT AND REFRACTIVE SURGERY | 1993年 / 19卷

关键词：

COMPUTERIZED VIDEOKERATOGRAPHY; CORNEAL TOPOGRAPHY; INTRAOCULAR LENS CALCULATION; KERATOMETRY;

D O I：

10.1016/S0886-3350(13)80403-8

中图分类号：

R77 [眼科学];

学科分类号：

100212 ;

摘要：

We compared the accuracy of keratometry and computerized videokeratography (CVK) for use in intraocular lens calculations. We studied 48 eyes of 45 patients having phacoemulsification and posterior chamber lens implantation. Computerized videokeratography was performed with the EyeSys Corneal Analysis System(TM) (ECAS(TM)). Using the SRK II, SRK/T, and Holladay formulas, we evaluated predictive accuracy calculated with keratometric values and four values derived from ECAS measurements. For each formula, the use of one of the CVK parameters resulted in lower mean absolute errors between actual and predicted postoperative refractive errors and higher percentages of cases with power prediction errors <0.5 and <1.0 diopters. Computerized videokeratography may provide a more accurate corneal curvature value than keratometry for use in intraocular lens calculations.

引用

页码：178 / 181

页数：4

共 8 条

[1]

Koch DD, Wakil JS, Samuelson SW, Haft EA, Comparison of the accuracy and reproducibility of the keratometer and the EyeSys Corneal Analysis System Model I, J Cataract Refract Surg, 18, pp. 342-347, (1992)

[2]

Sanders DR, Retzlaff J, Kraff MC, Comparison of the SRK II® formula and other second generation formulas, J Cataract Refract Surg, 14, pp. 136-141, (1988)

[3]

Retzlaff JA, Sanders DR, Kraff MC, Development of the SRK/T intraocular lens implant power calculation formula, J Cataract Refract Surg, 16, pp. 333-340, (1990)

[4]

Holladay JT, Musgrove KH, Prager TC, Et al., A three-part system for refining intraocular lens power calculations, J Cataract Refract Surg, 14, pp. 17-24, (1988)

[5]

Uozato H, Guyton DL, Centering corneal surgical procedures, Am J Ophthalmol, 103, pp. 264-275, (1987)

[6]

Olsen T, Sources of error in intraocular lens power calculation, J Cataract Refract Surg, 18, pp. 125-129, (1992)

[7]

Tsilimbaris MK, Vlachonikolis IG, Siganos D, Et al., Comparison of keratometric readings as obtained by Javal Ophthalmometer and Corneal Analysis System (EyeSys), Refract Corneal Surg, 7, pp. 368-373, (1991)

[8]

Moon P, Spencer DE, On the Stiles-Crawford effect, Journal of the Optical Society of America, 34, pp. 319-329, (1944)

← 1 →