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1 General aspects (1)   1.1 Epidemiology (14)   1.2 Population genetics (2)   1.3 Pathogenesis (1)   1.4 Quality of life (20)   1.5 Glaucomas as cause of blindness (8)   1.6 Prevention and screening (13) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (10)   2.2 Cornea (23)   2.3 Sclera (16)   2.4 Anterior chamber angle (7)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (15)     2.5.2 Schlemms canal (1)     2.5.3 Scleral outlet channels (1)   2.6 Aqueous humor dynamics (0)     2.6.1 Production (0)     2.6.2 Outflow (1)       2.6.2.1 Trabecular meshwork (4)       2.6.2.2 Uveoscleral (1)     2.6.3 Compostion (6)   2.7 Episcleral veins and venous pressure (2)   2.8 Iris (6)   2.9 Ciliary body (0)   2.10 Lens (0)   2.11 Vitreous body (0)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (18)   2.13 Retina and retinal nerve fibre layer (37)   2.14 Optic disc (42)   2.15 Optic nerve (2)   2.16 Chiasma and retrochiasmal central nervous system (13)   2.17 Stem cells (5)   2.20 Other (0) 3 Laboratory methods (0)   3.1 Microscopy (0)   3.2 Electron microscopy (2)   3.3 Immunohistochemistry (2)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (0)     3.4.2 Gene studies (30)   3.5 Molecular biology incl. 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pharmacoeconomics (8) 15 Miscellaneous (37)

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Abstract #82858 Published in IGR 20-4

Scleral avulsion after Ahmed valve M4 removal

Najla H; Sameer A
Saudi Journal of Ophthalmology 2019; 33: 420-422

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We report a case of intraoperative scleral avulsion that occurred during explantation of an Ahmed M4 valve. A 79-year-old female with open angle glaucoma with a history of glaucoma drainage device (GDD) implantation presented for routine follow-up. The ophthalmic examination indicated a focal implant exposure. The patient was scheduled for explanation of tube and plate and placement of alternate GDD. During implant removal, a horse-shoe shaped scleral avulsion was noted with softening of the globe and uveal and vitreous prolapse. The case was converted to an open globe repair and further glaucoma intervention was deferred. The vitreoretinal service was consulted, and glaucoma drops were added as needed to control intraocular pressure. Removal of Ahmed M4 implant can carry the risk of intraoperative scleral avulsion.

Glaucoma Division, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia.

Full article

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Classification:

12.8.2 With tube implant or other drainage devices (Part of: 12 Surgical treatment > 12.8 Filtering surgery)
12.8.11 Complications, endophthalmitis (Part of: 12 Surgical treatment > 12.8 Filtering surgery)

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