摘要
对２５只青紫蓝兔４２只眼行激光虹膜切开术（Ｎｄ：ＹＡＧ激光、氩激光及Ｎｄ：ＹＡＧ激光联合氩激光虹膜切开），借助光镜、透射电镜及扫描电镜观察比较术后即刻至８个月击射位虹膜的组织结构改变。结果表明：（１）Ｎｄ：ＹＡＧ激光作用的靶组织的内部张力较组织厚度对治疗效果的影响更大。（２）兔眼＜２００μｍ的Ｎｄ：ＹＡＧ激光孔及＜４５０μｍ的氟激光、Ｎｄ：ＹＡＧ激光联合氩激光孔均在术后１周内关闭。病理组织学检查显示，氩激光孔的色素上皮增殖、迁移征象更为明显。（３）氩激光热凝虹膜如不充分，基质血管扩张充血，后继Ｎｄ：ＹＡＧ激光击射时有加重出血程度的可能。
Abstract Laser iridotomy including Nd :YAG,argon andNd:YAG combined with argon was performed on 4 2eyes of 2 5 chinchilla rabbits. The postoperative follow-up was 8 months. The histopathological changes of thebides at the sites of the various laser shots under light,transmission and scanning electron microscopic examina-tions were compared.The results show :(1)In regard tothe Nd : YAG laser effect on the target tissue,the in-herent elasticity of the tissue may play a more importanlrole in curative effects of the therapy than the thicknessof the tissue.(2)Every iris hole,<200μm in diame-ter, performed by Nd:YAG or < 450μm, by argon orargon cornbined with Nd: YAG was closed by the firstpostoperative week. The histopathological findingsdemonstrate that the pigment epithelial proliferation andmigration are more marked in the irides with argon laseriridotomy.(3 ) An insufficient coagulative burn of theargon laser may cause congestion of iris blood vesselsand possibly, result in more severe bleeding duringsuccedcnt Nd:YAG laser shots.
出处
《中华眼科杂志》
CSCD
北大核心
1994年第6期441-444,T064,共5页
Chinese Journal of Ophthalmology
