Glossary
Disease Awareness Glossary Learn the meaning of terms related to eye conditions and diseases.
Astigmatism - A condition that occurs when the cornea is misshapen to some degree, causing light to focus improperly on the retina.
Cataracts - A condition caused by a clouding of the internal lens of the eye, causing blurred or distorted vision.
Color Vision Deficiency - A genetically inherited trait in which the ability to distinguish some colors is less than normal.
Diabetic Retinopathy - Associated with diabetes, an eye disease that can lead to blindness.
Farsightedness - The common term for hyperopia.
Floaters - Small, cloudy specks of various sizes that form in the vitreous fluid of the eye.
Glaucoma - An eye disease in which the internal pressure of the eye increases; it may cause permanent damage to the optic nerve, leading to blindness if not properly treated.
Hyperopia - Farsightedness; a condition in which close-up objects appear blurred
Keratoconus - A disease in which the cornea becomes misshapen, causing blurry vision.
Macular Degeneration - A disease in which the macula undergoes vascular or aging changes that may lead to the loss of central vision if untreated.
Myopia - Nearsightedness; a condition in which distant objects appear blurred.
Nearsightedness - The common term for myopia.
Presbyopia - A condition related to the normal aging process, in which it becomes difficult to focus on close-up objects.
Refraction - The eye’s natural ability to focus light rays properly on the retina.
Strabismus - A condition in which difficulty with eye muscle balance and coordination causes one or both eyes to turn in, out, up or down.
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