目的：观察中高度近视患者LASIK术前对周边视网膜变性和裂孔进行预防性激光光凝的疗效。
AIM: to investigate the therapeutic effects of preventive laser photocoagulation for moderate and high myopia patients with peripheral retinal degeneration or holes before LASIK operation.
视网膜剥离的高危险群，包括：眼球曾受外伤、糖尿病患病多年、中高度近视、家庭有人曾患过视网膜剥离者。
Retinal detachment of the high-risk groups, including: the eyeball have been traumatic, diabetes prevalence years, in the high myopia, the family suffered from some people who have retinal detachment.
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