Essential functions include but are not limited to: History taking, Visual acuity measurement, Manual refractometry, Lensometry, Tonometry, Measure pupil size and reactivity, Test and measure eye muscle function, Visual field testing, Corneal thickness measurement, Corneal curvature measurement, Retinal nerve fiber layer measurement, Retinal thickness and topography, Fundus photography, A and B-scan ultrasonography, IOL Master, Prepare for and assist with in-office procedures, Surgical assisting including sterile preparations, BAT testing, Inventory of medical supplies, Obtains prior authorizations for medications. Exceptional patient care, academic excellence and leading-edge research make UMass Memorial the premier health system of Central Massachusetts, and a place where we can help you build the career you deserve.