Multistep photorefractive keratectomy for high myopia.
Nineteen human myopic eyes exceeding -8.00 D underwent multi-step excimer laser photorefractive keratectomy (PRK) with 6-month follow up. We performed two or three step PRK at the same time according to the amount of myopia present. The preoperative refraction ranged from -8.87 D to -16.99 D (mean -12.28 D). The mean attempted correction was 7.83 D. Six months after surgery, the mean refraction was -2.23 D. Keratometry demonstrated stable flattening of the cornea, and pachometry showed central cornea thinning. Seventeen eyes had clear or trace corneal haze. Above results showed multi-step PRK is a safe and relatively efficient procedure for correction of high myopia, but long-term follow up will be necessary to determine the stability of this procedure.
Cho
Y S
YS
Kim's Eye Center, Pusan, Korea.
Kim
C G
CG
Kim
W B
WB
Kim
C W
CW
D000328:Adult; D002675:Child, Preschool; D003315:Cornea / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D053685:Laser Therapy / Q000379:methods*; D008297:Male; D009216:Myopia / Q000503:physiopathology / Q000601:surgery*; D012029:Refraction, Ocular; D016896:Treatment Outcome; D014792:Visual Acuity; D014945:Wound Healing