<unk>  is very rare as the only presenting symptom. Often, there is sufficient systemic evidence to help the physician decide between any one of the aforementioned possible systemic diseases. For those patients who present with only<unk>  of the retinal vessels, great investigative effort (Chest X-ray, blood test, urinary analysis, vascular biopsy, ophthalmology assessment, etc.) should be undertaken to ensure that a systemic disease is not the hidden culprit. Findings Ophthalmic examination may reveal neovascularization (creation of new vessels in the retina), retinal vessel narrowing, retinal vessel cuffing, retinal hemorrhage, or possible vitritis (inflammation of the vitreous body) or choroiditis (inflammation of the choroid).
Retinal vasculitis
Arteritic anterior ischemic optic neuropathy
Autoimmune optic neuropathy
Branch retinal vein occlusion
Branch retinal artery occlusion
Posterior ischemic optic neuropathy
Central retinal vein occlusion
Ischemic optic neuropathy