Trefford SimpsonDip Optom (Wits Technikon), 
MSc (Houston), PhD (Houston)

Telephone: (519) 888-4567 ext. 45015
Fax: (519) 725-0784
Office: OPT 371
Lab: OPT 232


Trefford did his optometric training in Johannesburg, South Africa, graduate training at the University of Houston and a post-doctoral fellowship at the University of Toronto. He has been at the University of Waterloo since 1994 and is currently a Professor at the School of Optometry and Vision Science.


  • Areas of interest: Soft Metrology, psychophysical measurement of ocular surface pain and thermal sensing, scaling symptoms and visual function, ocular surface imaging (particularly OCT), ocular surface structure and function, binocular vision
  • Approved Ph.D. supervisor
  • Graduate Officer (July 2009 - )

Clinic duties

  • Registered optometrist (Ontario)
  • Supervising clinician
  • Clinical interests: Binocular Vision, Electro-diagnostic Service

Teaching interests

Undergraduate courses

Graduate courses

Additional information

Links of interest

University of Waterloo

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