Nd：YAG激光透巩膜睫状体光凝降眼压的实验研究

An Experimental Study of Decreasing IOP by Nd:YAG LaserTransscleral Cyclophotocoagulation

本文报道了一种廉价的激光聚焦头与连续波Ｎｄ：ＹＡＧ激光联用，在一组有色家兔眼实施透巩膜睫状体光凝，激光输出功率为１０Ｗ，光凝时间０．５秒，聚焦头位于角膜缘后１ｍｍ。每只兔眼给予１２个光凝点，眼压在光凝术后１～３天降至最低点，连续观察３２天，眼压下降较光凝前均有非常显著意义（Ｐ＜０．０１）。光凝术后巩膜无明显损害，眼球前节的炎症反应在术后７～１０天消退。本文还讨论了激光透巩膜睫状体光凝的降眼压机理。

Contact transscleral cyclophotocoagulation using a cw Nd:YAG laser with a simple contact probe was performed on a series of pigrnented rabbit eyes. With the probe positioned lmm from the corneal lirnbus,de-livered energy of 5J(10W,0.5 sec) ,each eye received 12 such laser burns.By the following up for 32 days,the treated eyes had significantly lower mean IOP(P<0.01)and the lowest IOP occurred in the first 1～3 days after cyclophotocoagulation,The inflammatory reaction of anterior segrnent disappeared after 7～10days.The mechanism decreasing IOP by Nd:YAG treatrnent was discussed.