Coats' type retinitis pigmentosa and subretinal neovascularisation in a patient with renal failure

Bilateral Neovascular Glaucoma With Retinitis Pigmentosa: A Clinical Challenge

Retinitis pigmentosa (RP) and glaucoma are frequent associations. Masking of the underlying retinal ischemia is known to be caused by RP that may cause a clinical dilemma and treatment. We present a middle-aged healthy male presenting with bilateral refractory neovascular glaucoma (NVG) and classical RP with no evidence of posterior segment ischemia. The case highlights important points and tailored investigations to arrive at the final diagnosis and treatment for such challenging cases.

Coats-like retinopathy in a Young Indian Rhesus Macaque (Macaca mulatta)

A 1-year-old male Indian rhesus macaque presented with a bilateral blindness. Ocular examination, gross and histopathological evaluation, and immunohistochemistry were performed. The major findings were retinal telangiectasia, accumulation of exudate in the intraretinal and subretinal space, and retinal detachment. Coat-like retinopathy was diagnosed, and it has not been previously reported in veterinary medicine.

Retinitis pigmentosa with recurrent vitreous hemorrhage

We observed recurrent vitreous hemorrhage in two patients with retinitis pigmentosa: a 41-year-old female and a 49-year-old male. At age 41, the first patient had diffuse capillary dilatation, macular microaneurysms, and paramacular macroaneurysms in the right eye. At age 47, similar retinal vascular lesions and disc neovascularization developed in the left eye followed by recurrent vitreous hemorrhage. The retinal microvascular changes and vitreous hemorrhages subsided spontaneously during the ensuring 4 years. In the second case, recurrent vitreous hemorrhage developed in the right eye. Funduscopy and fluorescein angiography at age 49 revealed no angiopathy. However, 2 years later we detected retinal neovascularization in the macula and an avascularity in the peripheral retina in the right eye. Subretinal exudate or retinal detachment was consistently absent in both cases.