State Key Laboratory of Ophthalmology;
Zhongshan Ophthalmic Center;
Sun Yat-Sen University;
Guangzhou 510060;
China;
Hainan Eye Hospital;
Zhongshan Ophthalmic Center;
Sun Yat-Sen University;
Haikou 570311;
China;
Overhanging filtration bleb; trabeculectomy; cataract surgery;