Vitreous body enhancement, retina observation model, mainly used for diagnosis of introcular diseases, shaper range of focus of infection and relationship with the surrounding tissue. Diagnosed vitreous opacity, retinal detachment, eye base tumors, etc. eye diseases. A scan is used to measure chamber depth, lens thickness, axial length. Magnetic driven, noiseless. Multi continuous magnification, Real-Time magnification. Multigroup distances, perimeters and areas. Display Mode B, B+B, B+A, A.