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Reading Vision

Chances are high if you are in your 40s or beyond; you have begun to notice the effects of presbyopia. It might seem as if your arms aren’t long enough to read that menu. And, now you have an ever-growing collection of reading glasses. Most likely, presbyopia or “old eye” is the normal, age-related loss of near focusing ability, requiring new vision correction solutions– including presbyopia correction.

Causes and Symptoms

The loss of near vision and the ability to perform tasks that require near vision is part of the normal aging process. In the eye, the crystalline lens is located just behind the iris and the pupil. Tiny ciliary muscles pull and push the lens, adjusting its curvature, and thereby adjusting the eye’s focal power to bring objects into focus. As individuals age, the lens becomes less flexible and elastic, and the muscles become less powerful. Because these changes result in inadequate adjustment of the lens of the eye for various distances, objects that are close will appear blurry. The major cause of presbyopia is loss of elasticity of the lens of the eye. Loss of ciliary muscle power, however, is also believed to contribute to the problem.

Symptoms of presbyopia result in the inability to focus on objects close at hand. As the lens hardens, it is unable to focus the rays of light that come from nearby objects. Individuals typically have difficulty reading small print, such as that in telephone directories and newspaper advertisements, and may need to hold reading materials at arm’s length. Symptoms include headache and eyestrain when doing close work, blurry vision, and eye fatigue. Symptoms may be worse early in the morning or when individuals are fatigued. Dim lighting may also aggravate the problem.