Presbyopia means "age of sight." It is not the same thing as farsightedness. It is a gradual loss of accommodation - the ability of the eye to adjust in order to see clearly objects at different distances. To accommodate this ability, the naturally elastic lens of the eye changes in shape and thereby adjusts its focusing power. Loss of accommodation occurs gradually throughout life. As the lens of the eye ages, it becomes less elastic, which results in less accommodative power.Each year four million Americans develop presbyopia. Presbyopia becomes a problem for different people at different times. Although presbyopia gradually worsens, it does not cause blindness and can easily be corrected with glasses.
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