Ophthalmology In a patient with AIDS, which of the following organism is the most common cause of chorioretinitis? A Cytomegalovirus B Toxoplasma gondii C Histoplasma capsulatum D Cryptococcus neoformans 💡 Explanation In a patient with AIDS, which of the following organism is the most common cause of chorioretinitis? ✓ Correct Answer: A. Cytomegalovirus