Background: The present study reports two cases of nylon stent surgery for late hypotony after Baerveldt glaucoma implant surgery (BGIS). To our knowledge, no similar cases have been reported previously in Japan.
Case1: A 68-year-old woman presented with exfoliation glaucoma, for which BGIS was performed. After 5 months, nylon stent surgery was performed for visual loss, hypotony, and macular edema. Subsequently, the intraocular pressure (IOP) gradually increased and reached 22 mmHg 27days after the surgery. The increased IOP was treated with glaucoma ophthalmic solutions. This led to the recurrence of hypotony and macular edema; however, the conditions improved through dose reduction of the ophthalmic solutions and subcapsular injection of triamcinolone. Seven months after the nylon stent surgery, the best corrected visual acuity was 0.9, the IOP was 16 mmHg, and the inserted nylon thread was stable and not ectopic.
Case2: An 88-year-old female presented with exfoliation glaucoma, for which BGIS was performed. After 6 months, nylon stent surgery was performed for visual loss, hypotony, shallow chamber, and choroidal detachment. Subsequently, the IOP gradually increased and reached 28 mmHg27 days after the surgery. Glaucoma ophthalmic solutions were instilled. After 8 months, the corrected visual acuity was 1.0, the IOP was 10 mmHg, and the inserted nylon thread was stable and not ectopic. No serious complications developed in either case.
Conclusion: Nylon stent surgery may be effective in treating hypotony occurred at the late stage after BGIS.
Nippon Ganka Gakkai Zasshi (J Jpn Ophthalmol Soc) 123: 418-423, 2019.