The CRYSTALLINE LENS of the eye is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina. The lens, by changing shape, functions to change the focal distance of the eye so that it can focus on objects at various distances, thus allowing a sharp real image of the object of interest to be formed on the retina. This adjustment of the lens is known as accommodation (see also Accommodation, below). Accommodation is similar to the focusing of a photographic camera via movement of its lenses. Cataracts are opacities of the lens. While some are small and do not require any treatment, others may be large enough to block light and obstruct vision. Cataracts usually develop as the aging lens becomes more and more opaque, but cataracts can also form congenitally or after injury to the lens. Cataract surgery involves the removal of the lens and insertion of an artificial intraocular lens.
The CILIARY MUSCLE is a muscle in the CILIARY BODY, an area of the eye which helps people focus. With the assistance of the ciliary muscle, the lens of the eye can be flattened or rounded to allow people to focus on distant and near objects. This muscle is also responsible for controlling part of the drainage system of the eye to maintain the proper fluid pressure in the eye. Damage to this muscle can lead to vision problems.
The CORNEA is the transparent, dome-shaped window covering the front of the eye . It is a powerful refracting surface, providing 2/3 of the eye’s focusing power.
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If you would like to know which of your eyes is dominant, do the quick test outlined below.
TESTING PROCEDURE: Extend both arms in front of your body and place the hands together so as to make a small triangle between your thumbs and the first knuckle (see image). With both of your eyes open, look through the triangle and focus on a specific small object. Close your left eye. If the object remains in view, you are right eye dominant. If your hands appear to move off the object and move to the left, then you are left eye dominant.
From a nutritional standpoint, a large-scale research project conducted by the National Eye Institute has shown that there are several nutrients that help protect our eyes. The most important foods for preventing macular degeneration are ones that are rich in the antioxidants beta carotene, vitamin C, vitamin E, lutein and zeaxanthin … plus zinc and omega-3 fats. LOOK FOR OSTRICH IN SPECIALTY STORES!