The Synoptophore with H.B Machine is an ophthalmic device used to diagnose and treat binocular vision problems like squint, lazy eye, and double vision. It helps measure eye alignment and provides exercises to improve eye coordination. The machine includes a Haidinger's Brush feature to assess retinal function. Adjustable settings ensure precise testing, while LED lights provide clear illumination. It’s widely used in eye clinics for effective vision therapy.