Gislin Dagnelie, Ph.D., M.S.

Headshot of Gislin Dagnelie
  • Associate Director, Lions Vision Research and Rehabilitation Center
  • Professor of Ophthalmology


Prosthetic Vision, Retinitis Pigmentosa, Ultra-Low Vision (ULV) Assessment, Vision Impairment more

Research Interests

Retinitis Pigmentosa; Electronic vision restoration; Visual functioning questionnaires; Visual performance assessment more


Gislin Dagnelie, Ph.D., is a professor of ophthalmology at the Johns Hopkins University School of Medicine and the associate director of the Lions Vision Research and Rehabilitation Center at the Wilmer Eye Institute. His work over the last 35 years has been supported by grants from the National Institutes of Health, National Science Foundation, Foundation Fighting Blindness, and Research to Prevent Blindness, among others. Dr. Dagnelie has been the principal investigator for clinical trials of the Optobionics Artificial Silicon Retina (2004-2007) and the Second Sight ArgusTM II retinal implant (2007-2020), and is the site principal investigator for the Intracortical Visual Prosthesis (ICVP) clinical trial. Through his work with recipients of the Argus II retinal implant, since 2007, he has become interested in the way people with native or prosthetic ultra-low vision (ULV) use their rudimentary sight in daily life.  To study this, he developed a targeted visual functioning questionnaire, the ULV-VFQ, and standardized assessments of visual performance in the real world and virtual reality.

Dr. Dagnelie is a native of the Netherlands, where he earned a Ph.D. in medical physics at the University of Amsterdam. In 1986, he came to the Wilmer Eye Institute for research in retinitis pigmentosa, an interest he continues to pursue. more


  • Associate Director, Lions Vision Research and Rehabilitation Center
  • Professor of Ophthalmology

Departments / Divisions

Centers & Institutes



  • Ph.D.; University of Amsterdam (The Netherlands) (1986)
  • B.S.; University of Groningen (The Netherlands) (1971)
  • M.S.; University of Groningen (The Netherlands) (1977)

Additional Training

  • Johns Hopkins University, Baltimore, Maryland, 1988, ophthalmology

Research & Publications


The Dagnelie Lab is focused on assessing and enhancing the functional visual abilities of individuals with ultra-low vision. The lab uses psychophysical experiments to investigate innovative methods for improving visual prostheses.

Lab Website: Dagnelie Lab

Contact for Research Inquiries

Lions Vision Research and Rehabilitation Center
600 N. Wolfe Street
Johns Hopkins Wilmer Eye Institute
Baltimore, MD 21287 map
Phone: 410-614-4822
Fax: 410-955-1829

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