Any clouding of lens or insult of lens is called cataract. Cataract is the most leading cause of blindness in world. Causes of cataract are age related, because of injury, by using drugs, diabetic long time, mal neutration, chronic uveitis, electrical shock, etc.
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Advantages: The chart is familiar Inexpensive, quick and easy to use and interpret Disadvantages: Snellen chart has only one 6/60 lette...
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Preferences: Similarly quantities of letters per line. Consistently separating amongst lines and letters. Uniform movement ...
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Don't take your eyes for granted. Take these easy steps to keep your peepers healthy.
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