Neovascularization of Iris (NVI) New abnormal blood vessels on the surface of the iris in response to retinal ischemia
𝘊𝘰𝘮𝘮𝘰𝘯 𝘤𝘢𝘶𝘴𝘦𝘴: ● Advanced Proliferative Diabetic Retinopathy ● Central retinal vein occlusion ● Ocular ischemic syndrome ● Chronic retinal detachment ● Uveitis ● Neoplastic disorders eg. Retinoblastoma ● Post surgery (Vitrectomy/ Cataract Surgery) ● Trauma 𝐓𝐡𝐫𝐞𝐞 𝐬𝐭𝐚𝐠𝐞𝐬: 𝘚𝘵𝘢𝘨𝘦 𝟷: ● New thin walled vessels in iris near the pupillary border and at the root of iris 𝘚𝘵𝘢𝘨𝘦 𝟸: ● New vessels penetrate the anterior surface near pupil and root of iris- the two sets merge ● New vessels in iris stroma also ● Spontaneous hyphema can occur due to fragility of the blood vessels 𝘚𝘵𝘢𝘨𝘦 𝟹: ● Anterior surface fully covered by new vessels - becomes flat, loss of normal iris markings ● Ectropion uvea develops - anterior layer of new formed fibrovascular tissue contracts and pulls pigment layer anteriorly ● Peripheral anterior synechiae develops ● NVI may cover the trabecular meshwork - ultimately leads to neovascular glaucoma Image from Rajan Eye Care Hospital #ophthalmology #ophthal #iris #neovascularisationofiris #NVI #doctor #health #medical #vision #education #optometry #medicalstudent #optometrist #medicine #eye #ophtho #ophthalmologist #ophthalmo #med #medicaleducation #ophthalmologyresident #ophthalmologyresident
Comments