School of Medicine
Showing 191-200 of 741 Results
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Ryan Keenan, OD
Clinical Assistant Professor, Ophthalmology
BioDr. Keenan is a board-certified optometrist with the Stanford Health Care Byers Eye Institute and a clinical assistant professor in the Department of Ophthalmology.
Dr. Keenan diagnoses and treats a wide range of ocular and visual issues, such as vision problems related to stroke, intracranial lesions and tumors, and other neurological conditions. His clinical experience involves recognizing and caring for complex neuro-ophthalmic diseases. These include complications from diseases of the nervous system that adversely affect vision.
Dr. Keenan’s research interests include understanding genetic variations related to progressive weakness of the eye muscles. These conditions range from drooping eyelids to increasing limitations in eye movement.
Dr. Keenan has presented research and clinical findings to his peers at national and regional meetings, including the annual meetings of the American Academy of Optometry and the North American Neuro-Ophthalmology Society. -
Preston Kellenberger
Ph.D. Student in Biochemistry, admitted Autumn 2025
BioI was raised in Saint Louis County, MO and completed my undergraduate degree in Biochemistry at The University of Missouri – Columbia. I’m most excited by translational problems that can be addressed through the structural understanding and engineering of biological molecules. At Stanford, I look forward to joining a collaborative community that spans broad scientific disciplines, and to contributing to research that advances human health. I love spending my extra time playing the drums, and I have served as a snare drummer for the world-class Madison Scouts and Cavaliers drum corps.
