Myopic
Myopic
Myopic (/maɪˈɒpɪk/), also known as nearsightedness or shortsightedness, is a common condition of the eye where light focuses in front of, instead of on, the retina. This causes distant objects to be blurry while close objects appear normal.
Etymology
The term "myopic" comes from the Greek words "myein" (to shut) and "ops" (eye), referring to the squinting observed in individuals with the condition.
Symptoms
Common symptoms of myopia include blurry distance vision, squinting, eye strain, and headaches. Severe myopia can also increase the risk of other eye conditions such as retinal detachment, glaucoma, and cataract.
Causes
Myopia is caused by a refractive error in the eye. This can be due to a longer than normal eyeball or a cornea that is too curved for the length of the eyeball. Both of these cause light rays to focus at a point in front of the retina, rather than directly on its surface.
Treatment
Treatment for myopia includes the use of corrective lenses, such as glasses or contact lenses, and refractive surgery. Other treatments, such as orthokeratology (reshaping the cornea using special contact lenses) and atropine eye drops, are also used.
Related Terms
- Hyperopia: Also known as farsightedness, is the opposite of myopia. It is a condition where distant objects are seen clearly, but close ones do not come into proper focus.
- Astigmatism: A condition in which the cornea or lens is not evenly curved, causing blurred or distorted vision.
- Presbyopia: A condition that affects the eye's ability to focus on close objects. It typically starts to become noticeable in the mid-40s and continues to worsen until around age 65.
External links
- Medical encyclopedia article on Myopic
- Wikipedia's article - Myopic
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