Synoptophore / Binocular Vision Diagnostic & Therapy Unit Sold by U&I Optic Instrument 6 Months Warranty This device is designed for the diagnosis and treatment of binocular vision disorders such as strabismus and amblyopia. It offers a wide range of tests and therapeutic functions based on the three key elements of binocular vision: simultaneous vision, fusion vision, and stereoscopic vision. Suitable for both diagnostic and therapeutic applications, the instrument supports evaluation and correction of binocular function with reliable and precise performance. Please note: slide cards are unfortunately not included . Sold with 6 months warranty by U&I Optic Instrument.