Performs a variety of basic clinical tests on patients such as visual acuity tests, color vision testing, lensometry, exophthalmometry, Amsler Grid, Schirmer's Tests, evaluation of pupil, tonometry, keratometry, retinoscopy, and refractometry. Under direct supervision, assists the Ophthalmologist in caring for the eye patient by providing important and preliminary information on the patient''s medical condition that is obtained through a variety of visual acuity and ocular motility tests and through ophthalmic photography.