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Macular Hole

February 14, 2012 653 No of hits
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Macular Hole

A macular hole is a tear that occurs in the macula, which is part of the retina. The lens of the eye directs light onto the macula, which contains light-sensitive cells called cones and is responsible for clear, central vision. (The rest of the retina is responsible for peripheral or night vision.) When there is a hole in the macula, symptoms may include the inability to see an object clearly when looking directly at it, a dark spot in the center of the field of vision, or the sensation of looking through a thick cloud.

Macular holes are often caused by the shrinkage of the vitreous gel in the eye. During the aging process, the vitreous gel slowly liquefies, causing the rest of the body of gel to pull away from the retina that lines the back of the eye. When this happens, a small piece of the retina can tear off along with the vitreous gel, leaving a hole. When the hole is in the macula, it is called a macular hole. Macular holes can also occur due to eye or head injury or due to a different medical condition that affects the eye.

When a macular hole is diagnosed, surgery is usually warranted. In rare situations, when the hole is extremely small or surgery would be dangerous, the doctor may recommend to leave it untreated. Assuming that it needs surgery, however, the procedure would begin with a vitrectromy, which removes the vitreous gel that is pulling on the retina. In its place, an air bubble is inserted. The bubble exerts force on the macula, encouraging it to heal. The patient may be required to lie face down for two weeks in order to ensure that the air bubble remains in the appropriate place. If the facedown position is maintained, the chances of surgical success are about 90 percent.

Tags:   Macula   Macular hole   Vitreous gel   Retina  

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A macular hole is a tear that occurs in the macula, which is part of the retina. The lens of the eye directs light onto the macula, which contains light-sensitive cells called cones and is responsible for clear, central vision. (The rest of the retina is responsible for peripheral or night vision.)...

By: Richard Martine Created 75 months ago

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