现常用全视网膜光凝治疗增殖性视网膜病变及视网膜中央静脉阻塞等病,在眼底不能看清时,则以冷凝代替;冷凝也可促进玻璃体出血的吸收。但如冷凝过度,则可引起视网膜出血或形成裂孔、前房出血、葡萄膜炎、增殖性玻璃体视网膜病变、甚至眼球萎缩。因屈光介质混浊时不能看到视网膜在冷凝时发白的现象,故研究利用超声监测以防止冷凝过量。对15 Retinal photocoagulation is commonly used to treat proliferative retinopathy and central retinal vein occlusion and other diseases can not be seen in the fundus when the condensation instead of; condensation can also promote the absorption of vitreous hemorrhage. However, if excessive condensation, can cause retinal hemorrhage or the formation of holes, hyphema, uveitis, proliferative vitreoretinopathy, and even atrophy. Due to the opacity of the media can not see the retina condensation in the white phenomenon, so the use of ultrasound monitoring to prevent excessive condensation. Right 15