放射状角膜切开术的远期效果观察  

A study on five-year postoperative results of radial keratotomy

作　　者：黄菊天 

机构地区：[1]深圳市人民医院眼科

出　　处：《中华眼科杂志》1995年第3期189-191,共3页Chinese Journal of Ophthalmology

摘　　要：采用国际通用标准的放射状角膜切开术（ｒａｄｉａｌｋｅｒａｔｏｔｏｍｙ，ＲＫ）器械和设备对近视平均－５．４８Ｄ的１５５例（２８５只眼）行ＲＫ。对角膜散光超过１．００Ｄ者，联合行１～２对旗状横切口矫正散光。并对术后４～５年患者随访观察。结果表明，角膜屈光力平均降低３．９８Ｄ，角膜散光由术前平均０．６８Ｄ降至０．３６Ｄ，等效球镜平均降低－４．７４Ｄ。正视率、过矫率和低矫率分别为７０．７％、１５．５％及１３．８％。最佳矫正视力下降２行以上者占３．４％。裸眼视力≥１．０者占６３．８％，≥０．６者占８９．７％。并发症中角膜微切穿及视力波动发生率分别为４．６％和３４．１％。眩目发生率为８．８％，６个月后降至１．８％。术后１～２年，光学区内皮细胞丧失率平均为６．２％。Radial keratotorny was performed on 285 myopic eyes(155 cases)with a mean of-5.4 8D.1-2 pairs of flag-shaped transverse incisions were also made to correct corneal astigmatism over 1.00D,After a postoperative follow-up of 4-5 years,the mean keratometric corneal refractive power,corneal astigmatism and spherical equivalent refraction of the eyes were reduced by 3.98D,0.36D and-4,74D,respectively.The rates of emmetropia,overcorrection and undercorrection were 70.7%,15.5%and 13.8%,respectively.The decrease of the best corrected visual acuity by over two lines occurred in 3.4%of the eyes.The percentage of eyes with postoperative uncorrected visual acuity ≥1.0 was 63.8%and that≥0.6,89.7%, The complications included corneal microperforation in 4.6%,visual fluctuation in 34.1%and glare in 8.8%which decreased to 1.8%after postoperative 6 months.The mean rate of endothelial cell loss at the central optical zone was 6.2%in the postoperative 1-2 years.

关 键 词：角膜切开术 辐射状 屈光不正 眼科外科手术 预后 

分 类 号：R778.05[医药卫生—眼科]