小梁切除术是目前最普遍应用的眼外滤过术式，但对难治性青光眼的治疗却无多大效果。近年来，国内外应用房水引流植入物眼外滤过术治疗难治性青光眼，取得了一定的临床效果，但因房水引流植入物价格昂贵，并增加了发生并发症的可能，甚至给患者今后施行其它手术带来了困难... Trabeculectomy is the most commonly used extracorporeal filtration technique, but it has little effect on the treatment of refractory glaucoma. In recent years, at home and abroad using aqueous drainage implant extra-corporeal filtration surgery for refractory glaucoma, and achieved a certain clinical effect, but because of aqueous humor drainage implants are expensive and increase the possibility of complications, Even patients with the future implementation of other surgery has brought difficulties ...