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dioptrics

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noun plural but singular in construction di·op·trics \ dī-ˈäp-triks \

medical Definition of dioptrics

1 :a branch of optics dealing with the refraction of light especially by lenses

2 :refractive optics especially of a lens or system of lenses

correction of refractive error of the peripheral dioptrics of the eye
—Anne Lamont et al

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