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Topics Replies Last Post
Eye Pain ' 
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05/10/13
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Other Eye Problems Information

  • There are many diseases and disorders that may affect the eyes. As the eye ages certain changes occur that can be attributed solely to the aging process. Most of these anatomic and physiologic processes follow a gradual decline. With aging, the quality of vision worsens due to reasons independent of aging eye diseases...
  • While there are many changes of significance in the nondiseased eye, the most functionally important changes seem to be a reduction in pupil size and the loss of accommodation or focusing capability (presbyopia). The area of the pupil governs the amount of light that can reach the retina. The extent to which the pupil dilates also decreases with age. Because of the smaller pupil size, older eyes receive much less light at the retina. In comparison to younger people, it is as though older persons wear medium-density sunglasses in bright light and extremely dark glasses in dim light. Therefore, for any detailed visually guided tasks on which performance varies with illumination, older persons require extra lighting.

    With aging a prominent white ring develops in the periphery of the cornea- called arcus senilis. Aging causes laxity and downward shift of eyelid tissues and atrophy of the orbital fat. These changes contribute to the etiology of several eyelid disorders such as ectropion, entropion, dermatochalasis, and ptosis. The vitreous gel undergoes liquefaction (posterior vitreous detachment or PVD) and its opacities - visible as floaters - gradually increase in number.

  • Click to expand

View Top Other Eye Problems Answers at sharecare.com

Health Blogs

I’m sure many of you have heard my rants about the direction our health care system is going. You’ve heard my concerns of the number of children who are under-insured or who have no insurance here in the U.S. Solutions are complicated, and financial resources are more than limited, when state and federal cutbacks are mentioned each and every ... Read More »
Ask several experts if carrots are good for your eyesight and you are likely to receive a variety of responses. The question is often debated whether carrots, by themselves, are good for your eyes or whether they be good for your eyes because they contain beta-carotene, a form of vitamin A? Others will explain that if it is the beta-carotene, then ... Read More »
For almost all of us that can read this page, it's difficult to imagine the challenges of being blind. Even the simplest acts that we take for granted, like going into the kitchen and making lunch, must be infused with challenges that most of us can scarcely imagine. Now a new implantable medical device promises to restore vision to hundreds of ... Read More »

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