Completes basic ophthalmic patients' services, including instilling ocular drops; instructing patients on medication compliance, diagnostic testing, and surgical procedures; applying eye dressing; cleaning and sterilizing; preparing office instruments; and assisting in surgical procedures in the office. Demonstrates knowledge of preliminary testing including pupil function, ocular motility, confrontation fields, amsler grid, color vision, lensometry, keratometry, vision (distance and near), and measure pressure by non-contact tonometer.