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KMID : 0376119940210020287
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Medical Journal of the Red Cross Hospital
1994 Volume.21 No. 2 p.287 ~ p.294
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Photorefractive Keratectomy by Excimer Laser for the Correction of Myopia
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Abstract
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Photorefractive keratectomy was performed, using the excimer laser (VISX. Twenty/Twenty), on 117 myopic eyes. The eyes were classified in three groups by preoperative refractive errors; Group l included eyes with myopia ranging from -2.00 D. to
-5.57
D.; Group 2 included eyes with myopia ranging from -6.00 D. to-9.75 D.; Group 3 included eyes with myopia over -10.0 D. The eyes were followed up over six months to one year. During the follow up period, slit lamp examination, visual acuity,
refractive
error, pachometer, corneal opacity, IOP and corneal topography were examined.
@ES The results were as follows;
@EN 1) Preoperative mesn visual acuities were 0.07 and postoperative mean visual acuities were 0.72.
2) Postoperative refractive errors were smaller and visual acuities were better in eyes of Group 1 than Group 2 or 3.
3) Immediate postoperative refractive states showed hyperopia and then gradually regressed over 4 to 12 weeks.
4) keratometer reading and central corneal thicknesses were decreased postoperatively, but 4 to 12 weeks later, they started to increase.
5) there were minimal corneal corneal opacities. Peaking at 4 weeks and diminishing over the next 3 to 6 months, which were not felt to be visually significant.
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