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  • Blog

    Cornea and Corneal Diseases

    The outermost layer of your eye is called the cornea. It is clear and shaped like a dome. The cornea receives nutrients and lubrication from tears and the aqueous humor (fluid in the part of the eye behind the cornea). It is composed of three basic layers with two membranes between them.

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    Amblyopia (Lazy Eye)

    Amblyopia occurs when one eye is used more than the other. It is also called “lazy eye.” It happens when the weaker eye does not work well with the brain.

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    Myopia (Nearsightedness)

    Myopia is another name for nearsightedness. If you have myopia, objects that are far appear less clear to you than those that are closer.

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    Healthy Eyes

    Any injuries, disorders, or diseases that impair the delicate interplay between the parts of your eyes can adversely affect your vision—sometimes permanently. So it’s important to take steps to take care of your eyes.

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    Blepharitis

    If you have blepharitis, there is inflammation of the inside or outside of your eyelids due to bacteria or oily flakes at the base of your eyelashes.

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    Presbyopia

    Presbyopia means having problems seeing objects clearly when they are up close. It is a Greek word that means “old eye,” because presbyopia is a common condition that increases with aging.

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    Rare Eye Diseases

    A rare disease is generally considered to be one that affects fewer than 200,000 people in the United States. Some eye diseases are rare. Several are linked to genetic mutations.

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    Cataracts

    A cataract is a clouding of a lens in an eye. It can affect one or both eyes and most often happens in older people. In fact, more than half of Americans age 80 and older have a cataract or had cataract surgery.

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    Retinitis Pigmentosa

    Retinitis pigmentosa is an inherited disorder in which cells in the retina break down and lose function. It is rare, affecting just one in 4,000 people worldwide.

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    Refractive Errors

    Refraction is the bending of light as it passes through one object to another. In the eye, light passes through the cornea and the lens, and then focuses on the retina—the part of the back of the eye which receives light and processes it, sending messages to the brain through the optic nerve.

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