refraction /re·frac·tion/ (re-frak´shun)
1. the act or process of refracting; specifically, the determination of the refractive errors of the eye and their correction with lenses. 
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Refraction by the eye in (A) emmetropia; (B) hyperopia; and (C) myopia.
2. the deviation of light in passing obliquely from one medium to another of different density.refrac´tive
double refraction refraction in which incident rays are divided into two refracted rays, so as to produce a double image.
dynamic refraction the normal accommodation of the eye which is continually exerted without conscious effort.
| dynamic refraction n. Refraction of the eye during accommodation. |
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