Photorefractive keratectomy for residual myopia after radial keratotomy.

Abstract:

PURPOSE:To evaluate the results of photorefractive keratectomy (PRK) to treat undercorrected radial keratotomy (RK). SETTING:Instituto de Oftalmologia Tadeu Cvintal, São Paulo, Brazil. METHODS:A consecutive series of 28 eyes that had PRK to treat residual myopia after RK were studied. Refractive visual and safety data were collected and evaluated. RESULTS:One year after PRK, 75% of eyes had an uncorrected visual acuity of 20/25 or better and 85%, 20/40 or better. All but one case maintained or improved best corrected visual acuity; one case decreased from 20/25 to 20/30. At 1 year, 75% of eyes were within 0.50 diopter (D) of emmetropia and 90% were within 1.00 D. Only one case was more than 1.00 D undercorrected (-1.125 D) at 1 year. Mean pre-RK myopia was -5.90 D (range -2.00 to 11.80 D). Mean spherical equivalent improved from the residual postoperative level of -2.71 D +/- 0.86 (SD) before PRK to -0.21 +/- 0.86 D 1 to 3 months after PRK and to -0.40 +/- 0.43 D 1 year after PRK. CONCLUSION:Photorefractive keratectomy was efficacious in correcting residual myopia after RK in a group of selected patients.

authors

John ME,Martines E,Cvintal T

doi

10.1016/s0886-3350(96)80189-1

subject

Has Abstract

pub_date

1996-09-01 00:00:00

pages

901-5

issue

7

eissn

0886-3350

issn

1873-4502

pii

S0886-3350(96)80189-1

journal_volume

22

pub_type

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