Keratomileusis-in-situ using manual dissection of corneal flap for high myopia.
Overcorrection, regression and haze are some side-effects found after excimer laser photorefractive keratectomy (PRK) for high myopia. A new method attempts to avoid photoablation through Bowman's layer, using the stroma to flatten the cornea without use of a microkeratome. Manual surgical instruments such as the diamond blade, spatula, Pierce forceps, and Vannas scissors are used to remove a disc of anterior cornea. Minimal topical corticosteroids are used, avoiding the complications of prolonged corticotherapy. Six eyes underwent manual excimer laser keratomileusis-in-situ. Postoperatively, the epitheliums in these eyes initially were dry and excoriated. By the twentieth day, however, the eyes had re-epithelialized and recovered. The optical effect is the same as when keratomileusis is used. No more than three-fourths of the pre-existing myopia was used in the program as some undercorrection was desired.
Gomes
M
M
Recovery Center of Ocular Pathologies, Sao Paulo, Brazil.
D000328:Adult; D003315:Cornea / Q000601:surgery*; D016039:Corneal Transplantation / Q000379:methods*; D005500:Follow-Up Studies; D006801:Humans; D053685:Laser Therapy / Q000379:methods*; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D011379:Prognosis; D013524:Surgical Flaps; D014792:Visual Acuity