摘要
目的 不同屈光度近视进行光学屈光性角膜切削术 (PRK) ,探讨术中角膜切削深度与角膜雾状浑浊 (haze)形成的关系。方法 2 2 0眼分为轻度和中度近视两组进行PRK治疗 ,术前及术后 1、3、6、12和 2 4月用A超测量角膜中心厚度 ,及观察角膜haze的情况。结果 中度近视组术中角膜切削深度较深 ,haze形成比率较高 ;两组角膜中心厚度术后 3月时最厚 ,以后逐渐平稳 ;haze均在 1级以下 ,且多见于术后 1、3月 ,3月时最重 ,以后逐渐减轻甚至消失。结论 在中低度近视的PRK治疗中 ,角膜切削深度与屈光度的高低成正比 ,haze形成与角膜切削深度呈正相关 ,且术后角膜中心厚度的变化与haze的变化呈现一定的相关性。
Objective The relationship of cutting depth of cornea and the development of haze after photorefractive keratectomy (PRK) in different diopters were analyzed comparatively. Methods 220 patients with low or medium diopter were devided into two groups and underwent PRK treatment separately.The cornea thickness at the center before the treatment and 1,3,6,12,24 months after PRK were measured by A-ultrasound.The development of haze was observed.Results The cutting depth of the medium myopia cases was higher and had higher ratio of haze than that of low myopia.The central corneal thickness of two groups was thickest at 3 month after operation,and then stabilized.All haze was grade Ⅰ.Haze was common at 1 month,3 month after operation,and serious at 3 month.After that it regressed or disappeared.Conclusions In the low or medium diopter cases,the cutting depth of cornea was direct related with diopters.Haze was positively relative with cutting depth of cornea.
出处
《眼外伤职业眼病杂志》
北大核心
2003年第2期111-113,共3页
Journal of Injuries and Occupational Diseases of the Eye with Ophthalmic Surgeries
