Frontal

(of the eye), an imaginary line running through the eyeball from right to left, and corresponding with the movements of elevation and depre ion of the eyeball. A., Optic. I. The line from the center of the cornea to the macula lutea. 2. An imaginary line pa ing from the center of the eye-piece of a microscope through the body, objective, stage, and sub-stage, to the mirror. A., ch110.xhtml s 104