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  • Title: Goniodysgenesis associated with primary glaucoma in an adult European Short-haired cat.
    Author: Trost K, Peiffer RL, Nell B.
    Journal: Vet Ophthalmol; 2007; 10 Suppl 1():3-7. PubMed ID: 17973828.
    Abstract:
    A 9.5-year-old, male castrated European Short-haired (ESH) cat was presented with bilateral glaucoma associated with pectinate ligament dysplasia and an open iridocorneal angle (ICA) upon gonioscopy. The right eye (OD) was avisual and slightly enlarged; the left eye (OS) was still visual. Intraocular pressure (IOP) had been controlled with medical therapy over a 1.5 year-period in both eyes (OU). Eventually IOP could not be adequately controlled medically and the painful and blind right eye was enucleated and transscleral diode laser cyclophotocoagulation was performed twice in the left eye with less than optimal results and progressive loss of vision. Histopathology of the right eye showed goniodysgenesis characterized by failure of differentiation of the pectinate ligament, which existed as a solid sheet of uveal tissue at the entrance of a hypoplastic ciliary cleft, which contained loose mucoid mesenchymal tissue. The trabecular meshwork was hypoplastic and the scleral venous plexus could not be identified. Other findings of chronic glaucoma were inner retinal atrophy, optic nerve atrophy with disc cupping, scleral thinning, peripheral corneal vascularization and pigmentation, and mild focal iridal mononuclear inflammatory cell infiltrate.
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