Infection of the retina.
Syphilis, Tuberculosis, Toxoplasmosis, CMV (HIV), Herpes simplex and Varicella-zoster virus (acute retinal necrosis), Candida, Toxocara, Leptospirosis, Lyme Borrelia, Brucellosis, Whipple's disease, and Bartonella (cat-scratch disease).
Depends on the organism.
This is a disease that should be diagnosed by an ophthalmologist.
ICD9 Codes (Soon to be supplanted by ICD10)
Retinitis 363.20; diabetic 250.5 ; neurosyphilitic 094.83; histoplasmosis 115.92; capsulatum 115.02; duboisii 115.12; syphilitic (secondary) 091.51; congenital 090.0; early 091.5; late 095.8 ; tuberculous 017.3.