Clinical analysis of shallow anterior chamber after different kinds of anti-glaucoma surgeries and its causes

Objective To explore the occurrences and causes of shallow anterior chamber after different kinds of anti-glaucoma surgeries.Methods The clinical data of 160 patients(220 eyes) underwent anti-glaucoma surgery in our hospital from December 2005 to December 2010 were retrospectively analyzed.Based on the intraocular pressure before surgery,the patients were divided into group A(75 eyes),group B(78 eyes) and group C(67 eyes),and the trabeculectomy(42 eyes,26 eyes,22 eyes),sclerolimbctomy(25 eyes,28 eyes,25 eyes) and combined trabeculectomy(8 eyes,24 eyes,20 eyes) were performed.The follow-up time was from 1 month to 12 months,the occurrence rates of shallow anterior chamber after surgery were recorded,and the causes were analyzed.Results In 220 eyes,the shallow anterior chamber appeared in 86 eyes(39.1%),including 42 eyes(46.7%) with trabeculectomy,31 eyes(39.7%) with sclerolimbctomy,13 eyes(25.0%) with combined trabeculectomy,compared with combined trabeculectomy,there were statistical differences in occurrence rate of shallow anterior chamber of trabeculectomy and sclerolimbctomy(both P0.05),and no statistical difference between trabeculectomy and sclerolimbctomy(P0.05).The occurrence rate of shallow anterior chamber in group A was lower than that in group B and C,there were statistical differences(both P0.05),but no statistical difference between group B and C(P0.05).The main causes of shallow anterior chamber were choroidal detachment and unclear causes,compared with other causes,there were statistical differences(both P0.05).Conclusion The intraocular pressure before surgery is related directly with the occurrence rate of shallow anterior chamber,combined trabeculectomy has low shallow anterior chamber incidence,and the main causes of shallow anterior chamber after anti-glaucoma surgery are choroidal detachment and unclear causes.