| Optical Study of Posterior Chamber Intraocular Lens Implant Eyes Measured by Alpha 20/20 Biometric Ruler. |
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Han Chul Kim, Man Soo Kim, Jae Ho Kim |
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Department of Ophthalmology, Catholic Madical College, Kangnam St. Mary's Hospital, Seoul, Korea. |
| Alpha 20 / 20 biometric ruler 를 이용한 후방인공수정체 삽입안의 광학적 고찰 |
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김재호(Jae Ho Kim),김만수(Man Soo Kim),김한철(Han Chul Kim) |
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| Abstract |
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The accuracy of prediction of postoperative refractive error was evaluated in 113 patients with extracapsular cataract extraction and posterior chamber intraocular lens. The method of calculating the IOL power was using the SRK formula. The refraction was done on 113 cases which could be followed up for more than 6 months. The results were as follows: 1. The best corrected and naked visual acuity of 0.5 or better was 98.2%, 77.9% respectively. 2. The mean spherical equivalent of postoperative corrective lens power was -0.86 +/- 41D. 3. Error of predicted required spectacle lens power was -0.67+/-0.4D. in relative average. With the use of the standard formula described by Hoffer, out results for the accuracy of intraocular lens calculation was 70.7% +/- 1.0D / 94.6% +/- 2.0D./ +2.51D. to -4.0D. 4. The mean axial length, keratametric power, anterior chamber depth, and predictable lens power of 113 cases was 23.85 +/- 16mm, 42.79 +/- 23D., 3.40 +/- 12mm, 18.53 +/- 67D. respectively. |
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