Concept information
Preferred term
Astigmatism
Type
-
mesh:Descriptor
Definition
- Unequal curvature of the refractive surfaces of the eye. Thus a point source of light cannot be brought to a point focus on the retina but is spread over a more or less diffuse area. This results from the radius of curvature in one plane being longer or shorter than the radius at right angles to it. (Dorland, 27th ed)
Broader concept
Allowable Qualifier(s)
- blood (Qualifier)
- cerebrospinal fluid (Qualifier)
- chemically induced (Qualifier)
- classification (Qualifier)
- complications (Qualifier)
- congenital (Qualifier)
- diagnosis (Qualifier)
- diagnostic imaging (Qualifier)
- diet therapy (Qualifier)
- drug therapy (Qualifier)
- economics (Qualifier)
- embryology (Qualifier)
- enzymology (Qualifier)
- epidemiology (Qualifier)
- ethnology (Qualifier)
- etiology (Qualifier)
- genetics (Qualifier)
- history (Qualifier)
- immunology (Qualifier)
- metabolism (Qualifier)
- microbiology (Qualifier)
- mortality (Qualifier)
- nursing (Qualifier)
- parasitology (Qualifier)
- pathology (Qualifier)
- physiopathology (Qualifier)
- prevention & control (Qualifier)
- psychology (Qualifier)
- radiotherapy (Qualifier)
- rehabilitation (Qualifier)
- surgery (Qualifier)
- therapy (Qualifier)
- urine (Qualifier)
- veterinary (Qualifier)
- virology (Qualifier)
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/JVR-THZPDPPW-T
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