固体激光角膜切削术治疗近视散光的疗效观察

Observation of effect of the solid state laser photorefractive keratectomy for myopic astigmatism

为评价固体激光角膜切削术治疗近视散光的疗效，采用ＬｉｇｈｔＢｌａｄｅ固体激光手术系统对４４例６０眼复性近视散光同时竟性进行近视和散光角膜切削术，随访６～１２个月，对手术前后屈光度变化，视力结果统计分析，并与同期手术的单纯近视进行比较。结果：６０眼平均球镜屈光度从－６．７４±２．１４（－０．７５－１６．００）Ｄ降到－０．１４７±０．２３（－０．２５－０．７５）Ｄ柱镜度从１．６２±０．５３（０．７５－４．７５）Ｄ降到０．０６４±０．２７（０－０．７５）Ｄ。裸眼视力０．５，５７眼９５％，裸视力１．０４者７眼７３．３３％。单纯近视术后裸视力０．５和１．０的分别是９４．２３％和７５％，复性近视散光和单纯近视的固体激光疗效无明显差别（Ｐ＞０．１）。结论：ＬｉｇｈｔＢｌａｄｅ固体激光手术系统治疗近视散光安全有效，预测性好。

Purpose:To evaluate the effects of the solid state laser photorefractive keratectomy for myopic astigmatism.Methods:Photorefractive keratectomy was performed for myopia and myopic astigmatism in sixty eyes on 44 patients using the solid state laser Light Blade and follow up 6 to 12 months.Analysis the results of visual acuity and refraction of myopia and myopic astigmatism preoperative and postoperative.Results:Preoperative mean spherical refraction was -6 74±2 14D(-0 75 to -16 00D) to -0 147±0 23D(-0 25 to -0 75D) posoperative.Preoperative diopters of cylinder was 1 62±0 53(0 75 to 4 75),and 0 064±0 27(0 to 0 75)D postoperative.When the uncorrected visual acuity was achived 20/40 or better in 95%,20/20 or better in 73 33%,it was 94 23% and 75% respectively in simple myopia (P>0 1 and P>0 25).Conclusion:The solid state laser Light Blade photorefractive keratectomy for myopia and myopic astigmatism was effective,safe and predictable.