Thursday, May 1, 2014

Presbyopia

Presbyopia






What is presbyopia?
Presbyopia is a common type of vision disorder that occurs as you age. It is often referred to as the aging eye condition. Presbyopia results in the inability to focus up close, a problem associated with refraction in the eye.

How does presbyopia occur?
Presbyopia happens naturally in people as they age.The eye is not able to focus light directly onto the retina due to the hardening of the natural lens. Aging also affects muscle fibers around the lens, making it harder for the eye to focus on up-close objects.The ineffective lens causes light to focus behind the retina, causing poor close-up vision.
When you are younger, the lens of the eye is soft and flexible, allowing the tiny muscles inside the eye to easily reshape the lens to focus on close and distant objects.

Who is at risk for presbyopia?
Anyone over the age of 35 is at risk for developing presbyopia. Everyone experiences some loss of focusing power for near objects as they age, but some will notice this more than others.

What are the signs and symptoms of presbyopia?

Signs and symptoms include the following:
  • Hard time reading small print
  • The need to hold reading material farther
    than arm’s distance
  • Problems seeing objects that are close to you
  • Headaches
  • Eye strain
    If you experience any of these symptoms, you may want to visit an eye care professional for a comprehensive dilated eye examination. If you wear glasses or contact lenses and still have these issues, a new prescription might be needed.

    Can I have presbyopia and another type of refractive error at the same time?
    Yes. It is common to have presbyopia and another type of refractive error at the same
    time. There are several other types of refractive errors: nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. An individual may have one type of refractive error in one eye and a different type of refractive error in the other.


How is presbyopia corrected?
Eyeglasses are the simplest and safest means of correcting presbyopia. Eyeglasses for presbyopia have higher focusing power in the lower portion of the lens. This allows you to read through the lower portion of the lens and clearly see distant objects through the upper portion of the lens. It is also possible to purchase reading eyeglasses. These types of glasses do not require a prescription and can help with reading vision.

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