Chronic Vision Loss by Anatomic Location - Differential Diagnosis Algorithm Cornea: • Keratoconus • Stromal Scaring • Neovascularization • Edema • Pterygium Lens - Obscure Red Reflex, Poor fundus Visibility: • Cataract (Nuclear, Subcapsular, Cortical) Macula - Drusen or Edema: • Age Related Macular Degeneration (Wet, Dry) Retina - Cotton wool spots, Micro-aneurysms, Hemorrhage and Macular Edema: • Diabetic Retinopathy (Background, Pre-Proliferative, Proliferative) • Retinitis Pigmentosa (Decreased night vision, loss of peripheral vision) • Systemic inflammatory conditions Optic Nerve - Pallor, Papilledema, Irregular Disc Large Cup:Disc: • Glaucoma (Open-Angle) Optic Track - Visual field defects, decrease in color vision: • Optic Nerve Compression • Pituitary Lesion • Meningioma • Craniopharyngioma #Chronic #VisionLoss #Differential #Diagnosis #Algorithm #Causes #Ophthalmology
