Prism therapy for convergence insufficiency (CI) helps by?

Prism therapy for convergence insufficiency (CI) helps by?

• A. Increases vergence demand
• B. Reduces demand on vergence system, facilitates fusion, reduces symptoms during near tasks
• C. Has no effect
• D. Worsens symptoms

Answer: (B)

Convergence insufficiency is when the eyes don’t converge enough for near tasks, so people often experience eye strain, headaches, and difficulty maintaining single vision during reading or computer work. Prism therapy works by shifting the visual input so that the eyes don’t have to converge as much to fuse the two images. By reducing the vergence demand, the brain can fuse more easily, which lowers symptoms and makes near tasks more comfortable. It’s a way to ease the burden on the vergence system and improve functional comfort, not a cure for the underlying weakness. In practice, it can be used as a supportive aid, sometimes alongside exercises to gradually improve vergence ability.

Convergence insufficiency is when the eyes don’t converge enough for near tasks, so people often experience eye strain, headaches, and difficulty maintaining single vision during reading or computer work. Prism therapy works by shifting the visual input so that the eyes don’t have to converge as much to fuse the two images. By reducing the vergence demand, the brain can fuse more easily, which lowers symptoms and makes near tasks more comfortable. It’s a way to ease the burden on the vergence system and improve functional comfort, not a cure for the underlying weakness. In practice, it can be used as a supportive aid, sometimes alongside exercises to gradually improve vergence ability.