The Comparison of Aphakic Refraction Before and After Cataract Surgery.

Lee, Won Young; Hahn, Young Ho

Original Article

Journal of the Korean Ophthalmological Society 1991;32(9):732-737.
Published online September 1, 1991.

The Comparison of Aphakic Refraction Before and After Cataract Surgery.

Won Young Lee, Young Ho Hahn

Department of Ophthalmology, Kosin Medical College, Pusan, Korea.

백내장 수술전 후의 예상 및 실제 굴절력 변화에 대한 연구

한영호(Young Ho Hahn),이원영(Won Young Lee)

Abstract

We reviewed the records of 101 eyes who underwent extracapsular cataract extraction without intraocular lens implantation at Kosin Medical Center from Feb. 1987 to Mar. 1990. Of these, 47 eyes that showed postoperative corrected visual acuity of 0.5 more and more than 2 months' follow-up periods, were recruited for this study. To detect the changes of preoperative predicted aphakic refractions and postoperative observed aphakic refractions. we studied the changes of pre- and postoperative axial lengths, keratometric measurements, and observed aphakic refractions at postoperative 2 months were compared with predicted aphakic refractions, using linear regression formula. The results were as follows: 1. Distribution of age were in the range of 24 to 79 years(mean, 59.4 years), and seventh decade(31.8%) was most common. 2. Postoperative keratometric measurements was decreased in power of mean +/- SD; 0.04 +/- 0.14 diopters(p>0.05). 3. Postoperative axial length was increased by 0.20 +/- 0.09mm(p<0.05). 4. The difference between pre- and postoperative refractive power was mean +/- SD; 0.58 +/- 0.16 diopters(p<0.05).

Key Words: Aphakic refraction;Axial length;Keratometric measurements;Linear regression formula