Assessment of intraocular lens power on the basis of precataract refractive measurements.
Assessment of intraocular lens (IOL) power may rely, when biometric measurements of the eye are not available, on refraction previous to cataract development. Such an assessment, however, is generally considered unreliable. To improve the predictability of this method, we correlated refraction measurements with predictions of IOL power. In contrast to previous studies which used retrospective assessment of precataract refraction, this study included only noncataractous eyes and correlated the direct refractive measurements obtained with hypothetical IOL power values. These values were calculated by placing axial length and corneal power measurements of the same eyes in the SRK formula. We conclude that the regression formula obtained may improve the clinical judgment required for predicting lens implant power in cataractous eyes, on the basis of precataract refractive measurements.
Rasooly
R
R
Department of Ophthalmology, Hadassah University Hospital, Jerusalem, Israel.
Zauberman
H
H
D000293:Adolescent; D000328:Adult; D001699:Biometry; D006801:Humans; D007910:Lenses, Intraocular; D008875:Middle Aged; D055095:Optics and Photonics; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000628:therapy; D014463:Ultrasonography