Vischeck draws on algorithms developed at many different vision
laboratories around the world. In particular, the interactive online demo
owes a great deal to a 1997 paper by Brettel, Vienot
and Mollon entitled "Computerized simulation of color appearance for
dichromats" and to recent work from Brian Wandell's group at Stanford. Our
info page contains a more complete list of
The integrated vischeck system has been developed by two scientists
at Stanford university:
Bob Dougherty, PhD
Dr. Dougherty completed his doctoral work
in the psychology department of the University of California, Santa Cruz.
He worked as a postdoctoral fellow in the department of ophthalmology at
the University of British Columbia and
the BC's Children's
Hospital Visual Neuroscience Lab before moving to Stanford.
After a short leave from academics to run a small company, Dr. Dougherty
returned to Stanford as a senior research scientist to help form the new
Stanford Institute for Reading and Learning
(SIRL). He uses
structural and functional brain imaging and psychophysics to study visual
processing and reading development (see his academic site for more info).
Alex Wade, PhD
Dr. Wade completed his doctoral work on
retinal imaging at University College London in the Institute of
Ophthalmology and Moorfield's eye hospital. After a postdoctoral
fellowship at Stanford University to study color and form processing
in the human brain, he moved to Smith-Kettlewell
Eye Research Institute to establish the Brain Imaging Center there.
We'd like to hear from you! In particular,
we'd like to know if you found Vischeck useful
or if you have suggestions on ways to improve it.
The best way to reach us (and the color blind community) is through the new Vischeck
We do appreciate bug reports, but we currently don't have
time to fix the many known bugs (such as broken style-sheet
support). To report bugs or to contact the Vischeck team directly,
you can e-mail us at
If you want to stay informed of what the Vischeck team is up to,
join our mailing list. We promise to send no spam and
we will not share your information with anyone else.
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