Needle revision combined with sclera filtering channel reconstruction for late failure bleb 
QIN Jian-xiang, XIE Yan-qian, HU Cheng, WANG Xiao-jie, LIANG Yuan-bo.
Ophthalmology in China . 2019, (1): 39 -42 .  DOI: 10. 13281/j. cnki. issn.1004-4469. 2019. 01. 008