With this functional eye model the functions of the human eye can be taught very effectively. By moving the retina, the shape of the eye can be changed. The lens and ciliary body are made of silicone to allow the change of form and thickness of the lens. Pictures can be projected on the retina of the functional eye that allows you to demonstrate:
Accommodation of the lens
Near point of vision
Myopia (near sightedness)
How to correct these problems with glasses
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Functional eye comes with detailed instruction manual.