Performs preliminary screening examinations for physician review including, but not limited to, central and peripheral visual field tests; ocular motility tests; color vision tests; pharmacological pupil tests; tests to determine intraocular pressure and pupil testing for size, equality and reaction prior to dilation. Obtains topographical measurements of the eye to include corneal diameter and curvature; assist physician to fit patients with contact lenses and to evaluate lens fit with a bio-microscope.