Our UHN programs and services are among the most advanced in the world. We have grouped our physicians, staff, services and resources into 10 medical programs to meet the needs of our patients and help us make the most of our resources.
University Health Network is a health care and medical research organization in Toronto, Ontario, Canada. The scope of research and complexity of cases at UHN has made us a national and international source for discovery, education and patient care.
Our 10 medical programs are spread across eight hospital sites – Princess Margaret, Toronto General, Toronto Rehab’s five sites, Toronto Western – as well as our education programs through the Michener Institute of Education at UHN. Learn more about the services, programs and amenities offered at each location.
Maps & Directions
Find out how to get to and around our nine locations — floor plans, parking, public transit, accessibility services, and shuttle information.
Ways You Can Help
Being touched by illness affects us in different ways. Many people want to give back to the community and help others. At UHN, we welcome your contribution and offer different ways you can help so you can find one that suits you.
The Newsroom is the source for media looking for information about UHN or trying to connect with one of our experts for an interview. It’s also the place to find UHN media policies and catch up on our news stories, videos, media releases, podcasts and more.
When the photoreceptor cells in your retina die, the light vanishes. For good.
But recent exciting work by UHN's Dr. Valerie Wallace, when studying cone photoreceptor transplants to the eye, has uncovered a novel and surprising property of material exchange between cells.
Now, she and her dedicated team are evaluating whether this exchange process could help restore vision.
Dr. Wallace, co-director of the Donald K. Johnson Eye Institute within the Krembil Research Institute and holder of the Donald K. Johnson Chair in Vision Research, is primarily interested in blindness as a result of retinal disease.
"My lab in particular is focused on diseases that impair the function or cause the death of the photoreceptors," she says. "The photoreceptors are the cells in the retina that you need to sense light.
"If you lose them, your retina does not work," says Dr. Wallace.
"Because there are no treatments to restore vision after photoreceptors die, we are taking this very conceptually simple approach, and that is: 'Can we circumvent all of this cell loss by just putting in healthy photoreceptors, and would they behave like normal photoreceptors and hook up to the rest of the retina and restore the ability to respond to light?'
"It's really, really simple." Dr. Wallace laughs, "Well, the idea is simple."
The Krembil Research Institute and the Globe and Mail have teamed up for a special content project designed to highlight the tremendous accomplishments of our scientists and research programs at Krembil. The first of three magazines in this series looked at the brain and spine program and was released in the spring. A second magazine highlighting the vision program is now available online and a the third in the series will explore the arthritis program later this year.