If the cornea is damaged it may become swollen or scarred. In either case, its smoothness and clarity may be lost. The scars, swelling or irregular shape cause the cornea to scatter or distort light, resulting in glare or blurred vision. - top

The macula is important to eyesight since it is the part of the eye responsible for detailed central or "straight ahead" vision. Although people with AMD rarely go completely blind because of this condition, they may find it difficult to read, recognize faces or colors, drive, and perform other daily functions that require central vision. See similar questions...

The cornea is the clear surface at the front of the eye. It is the main focusing element of the eye. Should the cornea become cloudy from disease, injury, or any other cause, vision will be dramatically reduced. See similar questions...

MSN Health & Fitness does not provide medical or any other health care advice, diagnosis or treatment. See similar questions...

Iris changes caused by damage/disease may impact the results and leading to rejection of authorized members. The iris under normal conditions does not deteriorate or get damaged as easily as other physical attributes, but where damage/change does occur, rejection may be the result. The member will then be directed to the normal border control channels. See similar questions...

A cornea transplant is the surgical procedure which replaces a disc shaped segment of an impaired cornea with a similarly shaped piece of healthy donor cornea. See similar questions...

Blue light is the shortest visible wavelength, and because of this, it is easily scattered and reflected. By wearing quality sunglasses, which absorb and block blue light before it reaches the retina, blue light is never allowed to cause distortion. See similar questions...

The human crystalline lens is a clear, flexible substance in the normal eye. It is situated just behind the pupil and constitute one of the main elements that focus incident light onto the retina. A cataract means the clouding or opacification of the crystalline lens which in most cases is due to aging. When a cataract is formed, the incident light become scattered or blocked, causing blur images on the retina hence poor vision. See similar questions...

Normally the images sent by each eye to the brain are identical. When they differ, double vision occurs. Rather than go through life with double vision, the brain soon learns to ignore the image sent by one and decides to "see" only with the good eye. The eye that is ignored becomes weaker from disuse. See similar questions...

There are no specific raw foods which are unhealthy, but some foods if eaten in excess can be stressful to the digestive system. Having too much of the higher-fat raw foods such as nuts, seeds and avocados in your diet can be stressful to your system, especially for people who have been raw for years so their system is not used to all the heavier food anymore. Also, avoid eating too high a percentage of fruit or any one type of vegetable in your diet for a long period of time. See similar questions...

Today's lifestyles subject us to stressful living. The following four main factors contribute to a toxic liver: The typical American diet is harsh on the liver. Improper diets high in carbohydrates, saturated and hydrogenated fats can be hard on the liver. Diets low in quality protein do not provide the building blocks for repairing the body and stimulating the immune system. See similar questions...