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Human eyeball anatomy puzzle with 35 pieces. Each piece is highly detailed and of collectible quality. The finished model is 13 cm. Parts include lens, iris, sclera, retina, and vitreous humor.
The eyeball is an organ which gives us the sense of sight. The eyeball size of an adult is about 2/3 size of a ping-pong ball. The light waves from an object will pass through cornea, pupil, lens, vitreous humor and project an upside-down image on the retina. The vitreous humor is the clear gel inside the eyeball and helps to clear the focus on the retina. The two reversed images from both left and right eyes will be sent back to our brain as "electrical signals" through the pair of optic nerves. Our brain will reverse the 2 images and form it into one 3D visual image.
An eye is an organ of vision that detects light. Different kinds of light-sensitive organs are found in a variety of creatures. The simplest eyes do nothing but detect whether the surroundings are light or dark. More complex eyes are used to provide the sense of vision. Many complex organisms, including some mammals, birds, reptiles and fish, have two eyes which may be placed on the same plane to be interpreted as a single three-dimensional "image" (binocular vision), as in humans; or on different planes producing two separate "images" (monocular vision), such as in rabbits and chameleons. -- Wikipedia
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