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Visual acuity is the clarity of vision and the ability to recognize small details. It is measured by optotypes on a chart and expressed as a fraction, such as 6/6 or 20/20, which means the distance at which a person with normal vision can see the same optotype.
An eye examination is a series of tests performed to assess vision and ability to focus on and discern objects. It also includes other tests and examinations pertaining to the eyes, such as refraction, pupil function, ocular motility, visual fields, and ophthalmoscopy.
Ophthalmoscopy is a test that allows a health professional to see inside the fundus of the eye and other structures using an ophthalmoscope or funduscope. It is done as part of an eye examination and may be used to detect and evaluate symptoms of various retinal or eye diseases.
Macular degeneration, also known as age-related macular degeneration (AMD), is a condition that affects the central vision and may lead to blurred or no vision in the center of the visual field. Learn about the risk factors, types, diagnosis, prevention, and treatment options for AMD from this comprehensive Wikipedia article.
A visual field test is an eye examination that can detect dysfunction in central and peripheral vision caused by various medical conditions. Learn about the methods, types and applications of visual field testing, such as perimetry, Goldmann perimeter, automated perimetry and microperimetry.
Micropsia is a condition of visual perception in which objects appear smaller than they are. It can be caused by optical, retinal, brain or psychological factors, and can be diagnosed by various tests and imaging techniques.
The general approach to scheduling these exams is typically based on a variety of factors. If you have a family history of a particular illness, your doctor might recommend a specific schedule for ...
A corrective lens is a device that improves visual perception by correcting refractive errors. Learn about the different types of lenses, such as glasses, contact lenses, and intraocular lenses, and how they are prescribed and fitted by eyecare professionals.
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