摘要
目的 探讨对比敏感度和眩光敏感度检查在晶状体后囊膜混浊 (posteriorcapsuleopacification ,PCO)患者视功能评价中的意义 ,为掺钕钇铝石榴石 (neodymium yttriumaluminumgarnet,Nd :YAG)激光治疗晶状体PCO提供视功能评价方法。方法 对 6 7例 (73只眼 )超声乳化白内障吸除人工晶状体植入术后晶状体PCO患者行Nd :YAG激光晶状体后囊膜切开术 ,分别于手术前、后进行视力、对比敏感度和眩光敏感度检查 ,并加以分析。Nd :YAG激光晶状体后囊膜切开术采用环形切开向后翻转法 ,晶状体后囊膜瓣直径为 5mm ,平均单次脉冲能量为 (2 93± 0 6 3)mJ,平均脉冲次数为(19 0 9± 8 6 3)次 ,平均总能量为 (5 7 4 7± 36 0 5 )mJ。术后平均随访时间 (14± 6 )个月。结果 术后视力、对比敏感度和眩光敏感度均较术前明显提高 ,差异有非常显著意义 (P <0 0 1)。术前矫正视力≥ 0 8的 16只眼手术前、后最佳矫正视力比较 ,差异无显著意义 (P >0 0 5 ) ;不同视角的对比敏感度和眩光敏感度比较 ,差异均有显著意义 (P <0 0 5 )。术前不同视力患者各频段的对比敏感度比较 ,差异均无显著意义 (P >0 0 5 )。术前不同视力患者低频段和中频段眩光敏感度间差异有显著意义(P <0 0 5 ) ,高频段眩光敏感度间差异无显著意义 (P >
Objective To probe into the clinical application of contrast sensitivity and glare sensitivity in evaluating visual function of posterior capsular opacification (PCO) and also investigate the visual function criterion in performing neodymium:yttrium aluminum garnet (Nd:YAG) laser posterior capsulotomy. Methods Measurements of visual acuity, contrast sensitivity and glare sensitivity were obtained from 73 pseudophakic eyes (67 cases) before and after Nd:YAG laser posterior capsulotomy and the results were analysed. The method of Nd:YAG laser surgery was posterior capsular circular resection. The diameter of capsular chip was 5 mm. The average energy of single pulse was (2.93±0.63)mJ and the mean total energy was (57.47±36.05)mJ. The average follow up was (14±6) months. Results Visual acuity, contrast sensitivity curve and glare sensitivity curve improved in all cases postoperatively. Comparing the parameters of pre laser and post laser measurement, there was very significant difference ( P <0.01). The only postoperative complication was the laser spot in intraocular lens (IOL, 5 eyes, 6.8%). No retinal detachment, cystoid macular edema and dislocation of IOL were observed in this series. Conclusion Contrast sensitivity and glare sensitivity can represent the visual function of PCO sensitively and completely. They can be regarded as evaluation criterion of surgical timing and effect of Nd:YAG laser posterior capsulotomy.
出处
《中华眼科杂志》
CAS
CSCD
北大核心
2002年第9期556-561,共6页
Chinese Journal of Ophthalmology
关键词
对比敏感度
激光手术
人工晶体
晶体囊
手术后并发症
Contrast sensitivity
Laser surgery
Lens capsule,crystalline
Lenses, intraocular
Postoperative complications
