Glossary

 







Astigmatism: Blurred images at both distance and near due to irregular curvature of the cornea.

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Cataracts: Cataracts are cloudy areas in the lens of the eye that can cause changes in vision. Symptoms of cataracts include cloudy or fuzzy vision, as well as sensitivity to glare. Cataracts are treated with surgery.

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Diabetic Eye Disease: A disease of the small blood vessels of the retina of the eye in people with diabetes. In this disease, the vessels swell and leak liquid into the retina, blurring the vision and sometimes leading to blindness.

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Dry Eye Syndrome: Excessive dryness in the eye.

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Glaucoma: A disease of the eye characterized by increased intraocular pressure.

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Hyperopia (farsighted): The farsighted eye has a cornea that is too flat, or the eye is too short. Light rays refracted through the cornea converge at a focal point behind the retina. This results in close objects being out of focus while distant objects are clearer.

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LASIK: Laser Assisted In-Situ Keratomileusis; a popular surgical approach used to correct vision in people who are nearsighted, farsighted, or have astigmatism.

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Macular Degeneration: A deterioration or breakdown of a small area in the retina at the back of the eye that allows you to see fine details clearly and perform activities such as reading and driving.

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Myopia (nearsighted): Nearsightedness occurs when the eye's cornea is shaped too steeply, or the eye is too long. Incoming light rays are refracted to a focal point in front of the retina instead of on the retina. This results in distant objects being out of focus, while close objects can be seen clearly.

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Ophthalmologist: A medical doctor with additional specialized training in all aspects of eye care - medical, surgical and optical.

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Optician: Fits, adjusts and dispenses eyeglasses, contact lenses and other optical devices on written prescriptions of a licensed ophthalmologist or optometrist.

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Optometrist: Determines the need for eyeglasses and contact lenses, prescribe optical correction and screen for abnormalities of the eye.

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Presbyopia: Presbyopia is the normal worsening of vision with age, especially near vision. As you approach middle age, the lenses in your eyes begin to thicken and lose their flexibility.

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PRK: Photorefractive keratectomy; a type of laser eye surgery used to correct mild to moderate nearsightedness, farsightedness and/or astigmatism. PRK is another refractive procedure that may be suggested if a person has thin corneas.

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Refractive Errors: An error in the focusing of light by the eye and a frequent reason for reduced visual acuity.

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Routine Eye Exam: A series of tests done to check your vision and health of your eyes.

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