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refractive US English

Of or involving refraction

refractive error US English

Error in the focusing of light by the eye on the retina; especially myopia, hyperopia, presbyopia, or astigmatism; an instance of this.

refractive index US English

The ratio of the velocity of light in a vacuum to its velocity in a specified medium

refractive power US English

The relative ability of a substance, object, etc., to refract the light passing through it.