An Assistant Professor, Joannah is the founding director of the Elks Preschool Vision Screening Program. Since 2003, Joannah has developed and managed the screening program, which currently screens over 8,000 preschool children each year. She frequently conducts training for OHSU and University of Portland nursing students, Portland Community College ophthalmic technicians, the Oregon Head Start State Association and statewide community health clinics. She successfully lobbied to mandate vision screening for all Oregon children entering public schools.  She also successfully lobbied OHP to provide child friendly glasses that do not break. Joannah has presented vision screening research at international conferences, including the World Ophthalmology Congress, the American Academy of Pediatric Ophthalmology and Strabismus, the Association of Research in Vision and Ophthalmology, and at the American Academy of Pediatrics.