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13 relations: Astigmatism, Duochrome test, Eye examination, Far-sightedness, Fovea centralis, Near-sightedness, Ophthalmology, Optometry, Refraction, Refractive error, Snellen chart, Vision therapy, Visual acuity.
Astigmatism
Astigmatism is a type of refractive error in which the eye does not focus light evenly on the retina.
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Duochrome test
A duochrome test is a test commonly used to refine the final sphere in refraction, which makes use of the chromatic aberration of the eye.
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Eye examination
An eye examination is a series of tests performed by an ophthalmologist (medical doctor), optometrist, or orthoptist assessing vision and ability to focus on and discern objects, as well as other tests and examinations pertaining to the eyes.
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Far-sightedness
Far-sightedness, also known as hyperopia, is a condition of the eye in which light is focused behind, instead of on, the retina.
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Fovea centralis
The fovea centralis is a small, central pit composed of closely packed cones in the eye.
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Near-sightedness
Near-sightedness, also known as short-sightedness and myopia, is a condition of the eye where light focuses in front of, instead of on, the retina.
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Ophthalmology
Ophthalmology is a branch of medicine and surgery (both methods are used) that deals with the anatomy, physiology and diseases of the eyeball and orbit.
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Optometry
Optometry is a health care profession which involves examining the eyes and applicable visual systems for defects or abnormalities as well as the medical diagnosis and management of eye disease.
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Refraction
Refraction is the change in direction of wave propagation due to a change in its transmission medium.
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Refractive error
Refractive error, also known as refraction error, is a problem with focusing light accurately onto the retina due to the shape of the eye.
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Snellen chart
A Snellen chart is an eye chart that can be used to measure visual acuity.
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Vision therapy
Vision therapy (also known as vision training, or VT) is used to improve vision skills such as eye movement control, eye coordination, contrast sensitivity, and perception.
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Visual acuity
Visual acuity (VA) commonly refers to the clarity of vision.
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