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.
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Find out how to get to and around our nine locations — floor plans, parking, public transit, accessibility services, and shuttle information.
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Full-thickness corneal transplant
When both the inner and outer layers of the cornea are damaged, your surgeon may need to replace the full thickness of the cornea. This is known as penetrating keratoplasty (PKP). The damaged cornea will be removed, and a donor cornea will be stitched in place.
Partial-thickness corneal transplant
If only the outer and middle layers are damaged, your surgeon may replace only these layers through a procedure known as deep anterior lamellar keratoplasty (DALK). The recovery time for DALK is typically less than that of PKP, and the risk for transplant rejection is lower.
The innermost layer of the cornea is known as the 'endothelium'. If only this layer is damaged, your surgeon may replace it through one of two procedures:
In both of these, the inner layer is removed through a small incision, the donor tissue is inserted and the incision is closed with a few stitches. The procedures differ in the thickness of the donor tissue. The donor tissue for the DMEK surgery is thinner than for the DSEK surgery, resulting in a typically faster recovery.
Pre-Admission Clinic at
Toronto Western HospitalMain Pavilion – 1st Floor, Room 406
What should I bring to my pre-admission appointment?
If you are asked to attend the preadmission clinic, please bring
What happens during my pre-admission visit?
Depending on your needs, you may also meet:
Stop smoking before your surgery: learn how smoking and tobacco can affect your recovery after surgery, and how
quitting can improve your health.
What should i do the day of my surgery?
Arrive 2 hours before your scheduled operation time.
Day Surgery Unit (DSU) at
Toronto Western HospitalMain Pavilion – 4th Floor, take the Atrium Elevators
All hospital entrances are open by 6:00 am. However, the Leonard entrance (between Nassau St. and Wales Ave.) is easiest to access.
You will continue to recover when you return home.
Where and when
Cornea & Anterior Segment Disease ServiceToronto Western Hospital | East Wing – 6th Floor
Follow-up appointments may be scheduled for the following day, one week later and monthly.
If you do not have a follow-up appointment, call the surgeon's office to schedule one.
Who do I call with general post-operative questions?
Call your surgeon's office:
Dr. Clara ChanPhone: 416 603 5401
Dr. David RootmanPhone: 416 603 5401
Dr. Allan SlomovicPhone: 416 603 5389
Who do I call if I experience complications?
If you experience any of the following problems call your surgeon (if after regular office hours, call physician locating at 416 603 5744 to reach the resident doctor in ophthalmology for urgent questions or problems), your family doctor or come to the Toronto Western Hospital emergency department. If you are from out of town, go to the nearest emergency department.