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Patients & Visitors
- Patients & Visitors
  At UHN, we strive to deliver Compassionate Care & Caring. Learn more about the services and supports that are available to you throughout your journey.
- Getting to UHN
- Emergency Departments
- COVID Information
- Virtual Care at UHN
- Accessibility at UHN
- Find a Doctor
- myUHN Patient Portal
- Health Information
- Patient & Family Learning Centres
- Caregiver Resource Hub
- Translation Services
- Patient Relations
- Patient Services
- Pay Your Bill
- Walk-Safe Program
Programs & Services
- Programs & Services
  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.
- Ajmera Transplant Centre
- Altum Health
- Centre for Mental Health
- Laboratory Medicine Program
- Krembil Brain Institute
- Joint Department of Medical Imaging
- Medicine Program
- Peter Munk Cardiac Centre
- Princess Margaret Cancer Centre
- Schroeder Arthritis Institute
- Surgery and Critical Care Program
- Toronto Rehab
- Integrated Care Program
- Social Medicine
- Women's Health Program
- Pharmacy Services
- Transplant Outpatient Pharmacy
Health Professionals
- Health Professionals
  At the heart of everything we do at UHN are our Healthcare Professionals. Refer a patient to one of our 12 medical programs. Learn more about the resources and opportunities available for professional growth.
- Refer a Patient to UHN
- Health Professions at UHN
- Observerships
Research at UHN
Education at UHN
- Education at UHN
  University Health Network has grown to be one of the largest research and teaching hospital networks in Canada - pioneers in improving the lives of patients. Our long history of health professions education at Toronto General, Toronto Western, Princess Margaret and Toronto Rehab hospitals has consistently advanced the science of education.
- Michener Institute of Education
- UHN Education
- Health Information
- Patient & Family Learning Centres

About UHN
- About UHN
  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.
- Updates from the CEO
- UHN at a Glance
- Publications
- Our History
- Governance and Leadership
- Purpose and Performance
- Quality and Patient Safety
- Fiscal Accountability
- Privacy & Accessing Information
- Social Medicine Program
- Greening at UHN
- General Services
- Doing Business with UHN
- UHN Event Calendar
- UHN International
- Accessibility
Get Involved
- 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.
- Volunteer
- Participate
- Donate
Newsroom
- Newsroom
  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.
- News Stories
- Media Releases
- UHN Podcasts
- Social Media at UHN
- Videos
- Media Contacts & Policies
TeamUHN
Careers
Contact

Meet Our Team

The Donald K. Johnson Eye Institute has recruited an outstanding faculty of scientists and affiliates, who are advancing research in vision science.

Scientists/Clinician-Scientists

Brian Ballios
Scientist
Director, Clinical Research Unit
Medical Retina Clinic

Philippe Monnier

Philippe Monnier
Senior Scientist

Michael Reber
Senior Scientist

Karun Singh
Senior Scientist

Jeremy Sivak
Senior Scientist

Valerie Wallace

Valerie Wallace
Co-Director, Donald K. Johnson Eye Institute
Senior Scientist

Clinician Investigators

Clara Chan
Cornea Clinic

Robert Devenyi
Surgical Retina Clinic

Alexander Kaplan

Alexander Kaplan
Medical Retina Clinic

Irfan Kherani
Glaucoma Clinic

Stephen Kraft
Director, Strabismus Clinic

Hatem Krema
Director, Ocular Oncology Clinic

Efrem Mandelcorn

Efrem Mandelcorn
Co-Director, Donald K. Johnson Eye Institute
Surgical Retina Clinic

Mark Mandelcorn

Mark Mandelcorn
Surgical Retina Clinic

Samuel Markowitz

Samuel Markowitz
Director, Low Vision Rehabilitation Clinic

David Mathew
Glaucoma Clinic

Monica Nido
Low Vision Rehabilitation Clinic

David Rootman
Co-Director, Cornea Clinic

Matthew Schlenker

Matthew Schlenker
Glaucoma Clinic

Marisa Sit
Director, Comprehensive Ophthalmology Unit

Allan Slomovic
Co-Director, Cornea Clinic

Peng Yan
Surgical Retina Clinic

Scientific Associate

Luminita Tarita-Nistor

Luminita Tarita-Nistor
Low Vision Rehabilitation Clinic

Donald K. Johnson Eye Institute Affiliates

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