What condition is primarily treated using Ganciclovir?

Ganciclovir is primarily used to treat cytomegalovirus (CMV) infections, especially in individuals who are immunocompromised, such as those with HIV/AIDS or organ transplant recipients. CMV retinitis is a significant ocular complication in these patients, leading potentially to vision loss if left untreated. Ganciclovir acts by inhibiting viral DNA synthesis, thereby effectively reducing the viral load and managing the infection.

The effectiveness of Ganciclovir in treating CMV retinitis stems from its ability to target the replication processes of the virus. It is specifically indicated for this condition due to the high prevalence of CMV in cases of severe immunosuppression, as well as its serious consequences for vision.

Other conditions, while they may involve viral pathogens, are not the primary targets for Ganciclovir therapy. Ganciclovir is not typically used for herpes simplex virus (HSV) infections, HIV treatment, or influenza, as these conditions are treated with other antiviral agents.