photorefractive effect

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photorefractive effect

[‚fōd·ō·ri′frak·tiv i′fekt]
(optics)
An effect displayed by many electrooptic materials in which a change in the index of refraction is induced by the presence of light, and this change is retained for a time after the light exposure ceases.
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References in periodicals archive ?
However, the phenomenon of a photorefraction is an essential limiting factor (Galutskiy, Vatlina, and Stroganova, 2009; Kolker, Dmitriev, Gorelick, Wong, and Zondi, 2009.
Investigations in the 1980s of various species by means of retinoscopy and photorefraction (Martin and Young) suggested penguin corneas are relatively flat with a refractive power of about 29D which is neutralised under water.