What is the leading cause of blindness in HIV patients?

What is the leading cause of blindness in HIV patients?

• A. CMV retinitis
• B. Cryptococcal meningitis
• C. Retinal detachment
• D. Toxoplasmosis retinochoroiditis

Answer: (A)

The main idea here is that opportunistic retinal infection from CMV is the most common cause of blindness in people with advanced HIV. When the CD4 count falls very low (often below 50), cytomegalovirus can reactivate in the retina and cause necrotizing retinitis with hemorrhages along the retinal vessels. This process is typically painless and progressive, and if it’s not treated, it can advance to retinal detachment and irreversible vision loss. That makes CMV retinitis the leading culprit for vision loss in AIDS. Other conditions listed don’t fit as the primary cause of blindness in this population. Cryptococcal meningitis affects the brain and meninges rather than the retina as a primary problem. Retinal detachment is a consequence that can occur later in the course of CMV retinitis rather than the initial disease. Toxoplasmosis retinochoroiditis can cause focal retinal inflammation, but it is less likely to account for the widespread, progressive blindness seen with CMV retinitis in AIDS.

The main idea here is that opportunistic retinal infection from CMV is the most common cause of blindness in people with advanced HIV. When the CD4 count falls very low (often below 50), cytomegalovirus can reactivate in the retina and cause necrotizing retinitis with hemorrhages along the retinal vessels. This process is typically painless and progressive, and if it’s not treated, it can advance to retinal detachment and irreversible vision loss. That makes CMV retinitis the leading culprit for vision loss in AIDS.

Other conditions listed don’t fit as the primary cause of blindness in this population. Cryptococcal meningitis affects the brain and meninges rather than the retina as a primary problem. Retinal detachment is a consequence that can occur later in the course of CMV retinitis rather than the initial disease. Toxoplasmosis retinochoroiditis can cause focal retinal inflammation, but it is less likely to account for the widespread, progressive blindness seen with CMV retinitis in AIDS.