J Korean Ophthalmol Soc.  1997 Jul;38(7):1128-1138.

Complications after Excimer Laser Photorefractive Keratectomy in High Myopia

• Jeong JW
• Hahn YH

Abstract

To evaluate the results and complications of excimer laser photorefractive keratectomy(PRK) in high myopia, 39-months follow-up study after PRK on 179 eyes with high myopia(more than -0.6 diopter) was performed prospectively. And comparative analysis in complications of excimer laser PRK between high myopia and low and moderate myopia(less than -5.9 diopter) was done. In case of high myopia, overcorrection was developed in 63 eyes(35.39%) and undercorrection was developed in 17 eyes(9.55%) 6 months after PRK. At 10 days, induced astigmatism appeared in 122 eyes(68.16%), but it wasdecreased with the lapse of time. Twenty three eyes(12.99%) lost 2 lines of best-spectacle-corrected visual acuity 1 year after surgery, but part of the eyes regained gradually baseline visual acuity. Clinically significant corneal haze was developed in 80 eyes(44.69%) during follow-up period. Excimer laser PRK in high myopia compared with low and moderate myopia induced significantly high occurrence in overcorrection, undercorrection, refractive astigmatism, loss of best-corrected visual acuity, and corneal haze(P<0.05).

Keyword

Complications; Excimer laser photorefractive keratectomy; High myopia

MeSH Terms

Astigmatism
Follow-Up Studies
Lasers, Excimer*
Myopia*
Photorefractive Keratectomy*
Prospective Studies
Visual Acuity