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Eye Care Team


Dr. Catherine Birt, MA, MD, FRCSC

Affiliate scientist

Sunnybrook Health Sciences Centre
2075 Bayview Ave., Room M1 302A
Toronto, ON
M4N 3M5

Phone: 416-480-5882
Fax: 416-480-4481

Office Manager: Christine Girdharry  
Phone: 416-480-6053
Fax: 416-480-4481

Clinical ProfileShow/hide details

Medical Receptionist: Ross Murray
Phone: 416-480-6053
Fax: 416-480-4481

Ophthalmic Assistant: Numan Hallaji

Dr. Birt is a fellowship-trained glaucoma sub-specialist, taking care of glaucoma across the spectrum of disease. She is also a cataract surgeon.

Glaucoma surgery (including laser procedures) are done at Sunnybrook Health Sciences Centre, while cataract surgeries are done both at Sunnybrook and at the Kensington Eye Institute.

Research ProfileShow/hide details

Administrative Assistant: Christine Girdharry
Phone: 416-480-6053
Fax: 416-480-4481


  • BA, 1984, psychology, Queen's University, Canada
  • MA, 1985, psychology, University of Toronto, Canada
  • MD, 1989, University of Toronto, Canada
  • FRCSC, 1994, ophthalmology, Canada

Appointments and Affiliations:

Research Focus:

  • Glaucoma

Research Summary:

Dr. Birt’s research focus is glaucoma, including studies of new medications, imaging technologies and the results of laser and surgical procedures. She is looking at the efficacy of selective laser trabeculoplasty (a type of microsurgery for glaucoma) in different populations. She is also studying the results of bleb needling (a procedure to restore to fluid drainage and lower eye pressure) in two patient populations. She also conducts phase 3 and 4 drug efficacy trials in partnership with industry.

Selected Publications:

See current publications list at PubMed.

  1. Bower TN, Muhsen S, Overbury O, Birt CM, Kasner, O. Canadian ophthalmologists' opinions concerning complementary and alternative medicine (CAM) use in glaucoma. J Glaucoma. 2013 Sep;23(7):430–4.
  2. Kent S, Hutnik CML. Birt CM, Damji KF, Harasymowycz P, Si F, Hodge WG, Pan IY, Crichton A. A randomized clinical trial of selective laser trabeuloplasty versus argon laser trabeculoplasty in patients with pseudoexfoliation. J Glaucoma. 2013 Jun-Jul;24(5):344–7.
  3. Pradhan ZS, Dalvi R, Lai T, Kranemann C, Boyd S, Birt CM. Prostaglandin agonist effect on matrix metalloproteinase aqueous levels in glaucoma patients. Can J Ophthalmol. 2015 Feb;50(1):6–10.
  4. Aguayo Bonniard A, Yeung JY, Chan CC, Birt CM. Ocular surface toxicity from glaucoma topical medications and associated preservatives such as benzalkonium chloride (BAK). Expert Opin Drug Metab Toxicol. Epub 2016 Jul 18.
  5. Calafati J, Pradhan ZS, Birt CM. Frequency of unplanned intervention in patients attending for a presumed routine glaucoma followup appointment. Can J Opthalmol. Forthcoming 2016.