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Our Doctors

Photo of Dr. Laura Thomas


Dr. Laura Thomas, a Hamilton native, graduated from the University of Waterloo Optometry program in 1994 on the Dean’s Honours List, after working on her undergraduate degree of Honours Biology and Psychology at the University of Guelph and McMaster University. Over the next 9 years she practiced in both North Hamilton and Ancaster optometry offices, joining the Dundas Optometry in 2002. She became a partner in the practice in 2007 and completed her therapeutic drug training in 2009. Dr. Thomas really enjoys the challenges that a full scope optometry practice provides and appreciates the relationships she develops with her patients. She has a special interest in children’s vision and sees kids referred in by family physicians, pediatricians and other patients from across the city. She feels privileged to provide eye care to the Dundas/Hamilton community and she works very hard to keep up to date with new treatments and technologies as they develop. When not wearing her “eye doctor” cap, Dr. Thomas enjoys spending time with her husband, two active children, and friends. She enjoys downhill skiing, running, hiking, kayaking, canoeing and camping.


Dr. Katie Mann joined Dundas Optometry as an Associate in 2009 and was thrilled to become a partner in 2015. Born and raised in West Hamilton, she was a patient here at Dundas Optometry, where Dr. Johnson became her mentor. She was also inspired to pursue eye care as a career by the three generations of ophthalmologists in her own family. After completing her Bachelor of Science at Queen's University, Dr. Mann went on to obtain her Doctor of Optometry degree at the University of Waterloo, graduating in 2009 on the Dean’s Honour List. During her final year of studies, she completed internships here at Dundas Optometry, Image Optometry in Vancouver, and the Utah Eye Institute in Salt Lake City. Upon graduation, Dr. Mann traveled with a classmate to Ghana to volunteer with Unite for Sight, an NGO committed to providing eye care to remote communities in the developing world. For the first few years of her career, she split her time between Dundas Optometry and Spadina Optometry in downtown Toronto, and as of 2015 she is at Dundas Optometry full-time. She lives in Burlington with her husband and two sons and when she's not at work, she enjoys travelling, skiing, and spending time with her family at their Muskoka cottage.

Photo of Dr. Katie Mann

Photo of Dr. Mariam Hermiz

Dr. Mariam Hermiz

Dr. Mariam Hermiz grew up in Leamington, a small town in Southern Ontario, and moved to Burlington in 2009. After completing her undergraduate degree at the University of Toronto, she obtained her Doctor of Optometry from the University of Waterloo. She graduated on the Dean’s Honour List and received the Alcon Award for Excellence in Contact Lenses. During her clinical rotations, Dr. Hermiz interned with ophthalmologists at the Eye Centers of South Florida where she gained experience in diagnosing and treating eye diseases. She discovered a special interest for specialty contact lenses during her primary care clinical rotations. She also participated in a mission trip to Honduras, where she helped provide eye care and glasses to the residents of Tela. Dr. Hermiz is excited to join the Dundas community and looks forward to providing the best of care to the residents of Dundas and surrounding areas. She is fluent in both English and Chaldean/Assyrian. In her spare time, she explores new hiking paths and attends theatrical and musical performances.


A native of Ottawa, Ontario, Dr. Daina Sanderson set her career goal of Optometrist at an early age. She graduated from the University of Waterloo in 2004 with her Honours Bachelor of Science and Doctor of Optometry degrees. Part of her training included internships in Edmonton, Alberta and Ottawa, Ontario, with focus on pediatric exams, specialized contact lens fittings, and diagnosis and treatment of various ocular infections and diseases. Dr. Sanderson is an active member of the Canadian Association of Optometrists, the Ontario Association of Optometrists and the Hamilton and District Society of Optometrists. Happily married and a mother of two great boys, Dr. Sanderson has a keen interest in the health and well-being of families; she ensures that this is a tenet of her services at Dundas Optometry Clinic. In her spare time, Dr. Sanderson enjoys skiing, curling and sewing, while balancing work and a busy home life.

Photo of Dr. Daina Sanderson

Photo of Dr. Aynsley Tinkham

Dr. Aynsley Tinkham

Dr. Aynsley Tinkham was born and raised in Mississauga. She obtained an Honours Bachelors Degree in Science from the University of Western Ontario and completed her Doctor of Optometry degree in 2014 at the New England College of Optometry in Boston, Massachusetts. During her final year of studies, she completed internships at Boston Medical Center in Boston, Massachusetts with a focus on pediatric care, low vision and ocular disease as well as the Edith Nourse Rogers Memorial Veterans Hospital in Bedford, Massachusetts where she provided primary eye care for war veterans. After graduation, she worked with a group of Ophthalmologists at Scarborough Eye Associates/Bochner Eye Institute in Scarborough managing and co-managing patients with ocular disease. Dr. Tinkham is highly dedicated to providing each patient with a full and comprehensive eye examination. She is a firm believer in patient education and prides herself in taking the time to address all her patients’ concerns and needs. In her spare time, she enjoys spending time with her family, golfing, swimming and watching football.


Born and raised in Hamilton, Dr. Leonard graduated with honours from the Arts & Science Program at McMaster University in 2014. She then went on to complete her Doctorate of Optometry at the University of Waterloo. During her externship in Dallas, Texas, Dr. Leonard deepened her interest in treating ocular disease. Over the past 5 years she has also participated in many children’s vision screening programs, and delivered eye care to children and adults in remote communities throughout Canada. She is excited to be back in Dundas to provide excellent care to patients of all ages. Her interests outside of the office include dancing, hiking, writing, and travelling.

Photo of Dr. Kathleen Leonard

DR. BETTY JOHNSON, retired December 2022

Dr. Johnson opened Dundas Optometry Clinic in the fall of 1989, and the rest is history. She has been a pillar at the practice for many years and although her colleagues and patients will miss her, her retirement is well-deserved.

"I thank each and every one of you for putting your trust in me. It has been a privilege and an honour to have been providing optometric care to you and your family. I leave knowing that every doctor and staff at Dundas Optometry Clinic will continue to serve this community's visual needs for many years to come at the highest standards that you have come to expect from us." - Betty