​Differential diagnosis of Chronic Visual Loss

​Differential diagnosis of Chronic Visual Loss: 
-toxic optic neuropathy such as methanol
-xerophthalmia / vitamin A deficiency 
-onchocerciasis
-Hansen’s disease/ leprosy
-trachoma 
-lens dislocation due to homocystinuria or Marfan Syndrome.
-intraorbital tumor 
-cerebrovascular disease 
-brain tumor affecting visual pathway
-hypertensive retinopathy 
-sickle cell
-severe anemia 
-radiation 
-systemic lupus erythematosus 
-talc / emboli from IV drug use
-bitemporal pituitary tumor 
-chronic uveitis 
-corneal opacity due to pterygium or scar
-glaucoma 
-diabetic retinopathy 
-atrophic macular degeneration 
-cataract
-refractive error