The eye is a small sphere with a diameter of about 1 inch. Only one sixth of the eye is visible, the rest is protected in the orbital socket. There are many accessory structures of the eye including the eyebrows, eyelids, conjunctiva, lacrimal apparatus and eye muscles. Only a small part of the eye is dedicated to photoreception. This area is on the posterior wall on the inside the eyeball and is called the retina. It contains rods, for dim light and peripheral vision, and cones, for bright light and colour vision. The lens is situated at the front of the eyeball and its job is to focus light on the retina. Vision Improvement Eye Health Great For The Aging Improve Short & Distant Vision Natural Ingredients
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