TY - JOUR A1 - Au, Sunny A1 - Ko, Simon T1 - Ophthalmological signet ring sign by a glaucoma implant Y1 - 2019/9/1 JF - Indian Journal of Ophthalmology JO - Indian J Ophthalmol SP - 1477 EP - 1477 VL - 67 IS - 9 UR - https://journals.lww.com/ijo/pages/default.aspx/article.asp?issn=0301-4738;year=2019;volume=67;issue=9;spage=1477;epage=1477;aulast=Au DO - 10.4103/ijo.IJO_470_19 N2 - ER -