THEORETICAL VERSUS SRK-I AND SRK-II CALCULATION OF INTRAOCULAR-LENS POWER

被引：30
作者：
OLSEN, T
THIM, K
CORYDON, L
机构：
[1] Department of Ophthalmology, Vejle Sygehus, Vejle
来源：
JOURNAL OF CATARACT AND REFRACTIVE SURGERY | 1990年 / 16卷 / 02期
关键词：
biometry; cataract surgery; empirical; intraocular lens power calculation; predictability; regression; theoretical;
D O I：
10.1016/S0886-3350(13)80734-1
中图分类号：
R77 [眼科学];
学科分类号：
100212 ;
摘要：
The predictability of a theoretical, computerized (PC-assisted) intraocular lens (IOL) power calculation method and of the Sanders-Retzlaff-Kraff [SRK] I and II methods was evaluated from preoperative and postoperative biometry in 202 cataractous patients who had extracapsular cataract extraction (ECCE). The theoretical method resulted in the lowest range and standard deviation of the error, and the highest correlation coefficient between the observed and the predicted refraction (P < .05). The superiority of the theoretical approach was most clearly demonstrated when the postoperative measurements were used in the predictions (P < .001). This demonstrated the potential accuracy of the formula used and the importance of incorporating methods to predict the IOL position after surgery. If the prediction of the IOL chamber depth was properly corrected for the axial length dependence, a high prediction accuracy could be obtained in short as well as in long eyes. © 1990, American Society of Cataract and Refractive Surgery. All rights reserved.
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页码：217 / 225
页数：9
相关论文
共 31 条
  • [1] Colenbrander MC, Calculation of the power of an iris clip lens for distant vision, Br J Ophthalmol, 57, pp. 735-740, (1973)
  • [2] Fyodorov SN, Galin MA, Linksz A, Calculation of the optical power of intraocular lenses, Invest Ophthalmol Vis Sci, 14, pp. 625-628, (1975)
  • [3] Binkhorst CD, Dioptrienzahl künstlicher Augenlinsen, Klin Monatsbl Augenheilkd, 162, pp. 354-361, (1973)
  • [4] Retzlaff J, A new intraocular lens calculation formula, Am Intra-Ocular Implant Soc J, 6, pp. 148-152, (1980)
  • [5] Sanders DR, Kraff MC, Improvement of intraocular lens power calculation using empirical data, Am Intra-Ocular Implant Soc J, 6, pp. 263-267, (1980)
  • [6] Gills JP, Minimizing postoperative refractive error, Contact Intraocular Lens Med J, 6, pp. 56-59, (1980)
  • [7] Sanders D, Retzlaff J, Kraff M, Kratz R, Et al., Comparison of the accuracy of the Binkhorst, Colenbrander, and SRK™ implant power prediction formulas, Ann Intra-Ocular Implant Soc J, 7, pp. 337-340, (1981)
  • [8] Axt J, Power calculations for the style-30 (Sheets design) and other intraocular lenses, CLAO J, 9, pp. 102-106, (1983)
  • [9] Menezo JL, Chaques V, Harto M, The SRK regression formula in calculating the dioptric power of intraocular lenses, Br J Ophthalmol, 68, pp. 235-237, (1984)
  • [10] Holladay JT, Musgrove KH, Prager TC, Lewis JW, Et al., A three-part system for refining intraocular lens power calculations, J Cataract Refract Surg, 14, pp. 17-24, (1988)
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