Tube Obstruction of a Nonvalved Glaucoma Drainage Device by a Dislocated Soemmering's Ring.

The authors report a case of tube obstruction of a nonvalved glaucoma drainage device (Aurolab aqueous drainage implant; AADI) with a dislocated Soemmering's ring (SR) leading to a postoperative intraocular pressure (IOP) spike after an initial IOP reduction. A 24-year-old man with bilateral aphakia, bilateral secondary glaucoma developed corneal decompensation in the left eye. The IOP in the left eye was 22 mm Hg with 3 topical IOP-lowering medications (timolol 0.