undercorrection

undercorrection

(ŭn″dĕr-kŏ-rĕk′shŭn) In refractive eye surgeries such as LASIK, too small a change in shape of the cornea that results in inadequate focusing of light rays (failure of light to fall onto the retina).

undercorrection 

A term applied to a corrective lens prescription of slightly lower power than required. It has been prescribed in an unsuccessful attempt to slow the progression of myopia in children because it reduces the accommodative stimulus. See myopic defocus; myopia control.