The Functional Human Eye Anatomy Model is an anatomy model from 3B Scientific and manufactured in Germany. This physical eye model can be used to demonstrate the optical functions of the human eye, e.g. representation of an object on the retina, accommodation (change in the lens curvature), short-sightedness and far-sightedness. The physical eye model comprises: * Half eyeball with adjustable iris diaphragm, lens holder and 2 convex lenses (f - 65 mm and 80mm), on a rod * Half eyeball with retina (transparent screen), on a rod * Lens holder with one concave and one convex corrective lens, on a rod * Candle holder with 2 candles, on a rod * Aluminum rail, 50 cm long, with 4 clamp slides. Storage case for physical eye model. The model is best used for student education or patient consultations. The Functional Human Eye Anatomy Model is 19.3 x 2.2 x 7.1 in. and weighs 4.41 lbs.