Profile: Advanced Visual Instruments, Inc. specializes in medical devices that include wide angle retinal & vitreous surgical instruments and microscope video adapters for digital videos. We offer products like the AVI panoramic viewing system for vitreous surgery, surgical microscope video adapter & Manhattan mocrosurgical image composer. Our micro X-Y enables accurate centering of the image during surgery and is independent of the surgical microscope. Our AVI-50 surgical microscope adapter incorporates microX-Y, micro zoom, micro-focus and manual iris.