optic aberration

op·ti·c ab·er·ra·tion

failure of rays from a point source to form a perfect image after traversing an optic system.
Farlex Partner Medical Dictionary © Farlex 2012

op·tic ab·er·ra·tion

(op'tik ab'ĕr-ā'shŭn)
Failure of rays from a point source to form a perfect image after traversing an optic system.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012