Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content + Download Section PDF Listen ++ For further information, see CMDT Part 7-15: Vitreous Hemorrhage + Key Features Download Section PDF Listen +++ ++ Visual acuity ranges from 20/20 (6/6) to light perception only The eye is not inflamed, red, or painful Causes include Retinal tears (with or without detachment) Diabetic or sickle cell retinopathy Retinal vein occlusions Retinal vasculitis Neovascular age-related macular degeneration Retinal arterial macroaneurysm Blood dyscrasias Therapeutic anticoagulation Trauma Subarachnoid hemorrhage Severe straining (Valsalva retinopathy) + Clinical Findings Download Section PDF Listen +++ ++ Sudden visual loss Abrupt onset of floaters that may progressively increase in severity Occasionally, "bleeding within the eye" + Diagnosis Download Section PDF Listen +++ ++ The clue to diagnosis is the inability to see fundus details clearly despite the presence of a clear lens In all cases, examination by an ophthalmologist is essential + Treatment Download Section PDF Listen +++ ++ Retinal tears and detachments require urgent treatment