dioptrics
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