spheric aberration

spher·i·c ab·er·ra·tion

a monochromatic aberration occurring in refraction at a spheric surface in which the paraxial and peripheral rays focus along the axis at different points.
Synonym(s): dioptric aberration

spher·i·c ab·er·ra·tion

(sfēr'ik ab'ĕr-ā'shŭn)
A monochromatic aberration occurring in refraction at a spheric surface in which the paraxial and peripheral rays focus along the axis at different points.
Synonym(s): dioptric aberration.
References in periodicals archive ?
The STAAR Afinity Collamer Aspheric IOL has proven to reduce spheric aberrations leading to improved visual acuity and increased contrast sensitivity.