Gomes M
Recovery Center of Ocular Pathologies, Sao Paulo, Brazil.
J Refract Corneal Surg. 1994 Mar-Apr;10(2 Suppl):S255-7.
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.
过矫、回退和 haze 是准分子激光屈光性角膜切削术（PRK）治疗高度近视后发现的一些副作用。一种新方法试图避免通过Bowman层进行光消融，利用基质使角膜变平而不使用微型角膜刀。使用诸如钻石刀片、刮匙、皮尔斯镊和万纳剪刀等手动手术器械切除前角膜盘。使用最小量的局部皮质类固醇，避免长期皮质激素治疗的并发症。六只眼睛接受了手动原位准分子激光角膜磨镶术。术后，这些眼睛的上皮最初干燥且有擦伤。然而，到第20天时，眼睛已重新上皮化并恢复。光学效果与使用角膜磨镶术时相同。由于希望有一定程度的欠矫，因此在程序中使用的度数不超过原有近视度数的四分之三。
