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Our Eye Doctors

Colchester Eye CareEye care professionals specialize in understanding how the human eye really works, as well as diseases and conditions that affect your vision - many of which do not have obvious symptoms. Eye doctors know how age and risk factors affect vision over time for young and old, and they understand the benefits and features of corrective lenses including eyeglasses and contacts.

Our optometrists take the time to explain the results of your eye exam, describe your options and listen to your eye care needs. Because maintaining good eye health is an ongoing partnership, we encourage you to ask questions and share your health information, which could be vital to monitoring, diagnosing and treating potential vision problems.

Meet our doctors:


Dr. Thomas Dempsey

Dr. Tom Dempsey is a graduate of Lafayette College and SUNY Optometry. Upon graduation in 1991, he followed his wife Wendy to Connecticut and began his career in eye care. He joined Eye Care Associates in Prospect, CT as the practice’s pathology and ocular disease specialist. He took over Colchester Eye Care in 1997 and has treasured caring for the wonderful families in the local communities ever since! He expanded his practice in 2006, opening Hebron Eye Care.

Dr. Dempsey practices family eye care with special interests in ocular disease, dry eye management, refractive surgery and contact lenses. He also loves working with children. He has two beautiful daughters of his own that you will feel like you know once you’ve visited his office.

Dr. Dempsey is one of the most caring people in the world. He puts everyone’s needs before his own. He is the type of doctor that will call and check up on his patients long after the office has been closed not because he has to, but because he is still thinking about them and really cares to know how they are doing. He truly loves his profession and patients.

He is Advanced Care certified, a member of The American Optometric Association, The Connecticut Association of Optometrists, National Kidney Foundations Team Connecticut, The Colchester Lions Club, VOSH Connecticut (Volunteer Optometric Services to Humanity) and is very involved with promoting organ and tissue donation.


Dr. Alexandra Sadanowicz

Dr. Alexandra (Ola) Sadanowicz graduated from Loomis Chaffee School and went on to study Biology and Creative Writing in Waterville, ME and graduated cum laude in 2008. She continued her education after college at the New England College of Optometry in Boston, and graduated as a member of the Beta Sigma Kappa honors society. Winner of the Marchon Eyewear Award for Excellence in Practice Management, Dr. Sadanowicz furthered her interest in geriatrics, ocular disease, and primary care by doing a residency at the Veteran’s Affairs Hospital in Newington, CT, where she was honored to serve our Veteran population. During the course of this residency, Dr. Sadanowicz gained significant experience in the treatment and co-management of macular degeneration, glaucoma, ocular trauma, inflammatory eye diseases, diabetic retinopathy, and cataracts.

Both during her education and after graduating, Dr. Sadanowicz has worked in several pediatric and specialty practices and loves working not only with children of all ages but also those with special needs. Dr. Sadanowicz is an Advanced Care Certified Optometrist, CPR certified, and a member of the Connecticut Association of Optometrists as well as the American Optometric Society. Dr. Sadanowicz was raised locally in Bolton, CT and is fluent in the Polish language.

“After my residency I worked at several optometry offices but decided that the best fit for me is Colchester and Hebron Eye Care. One of my favorite things about working at Hebron and Colchester Eye Care is how we take a really personal approach to eyecare: We are treating the patient as a whole person rather than just a set of eyes. The pace that we keep in our office allows me to address the whole range of concerns that a patient has, rather than just one specific thing at a time. I also love how this office really functions like a whole family rather than a workplace. Everyone comes to work happy to be here, and you can really tell.”

When not working, Dr. Ola enjoys skiing, snowshoeing, canoeing/kayaking, learning to surf, traveling, reading novels, and quilting. Schedule an appointment with Dr. Ola to see why patients and staff are all raving about her!


Dr. Kassandra Wedeking

Dr. Kassandra (Kassy) Wedeking completed her undergraduate studies at the University of Northern Iowa, where she received her Bachelor of Arts degree in biology. She went on to obtain her Doctorate in Optometry at the Illinois College of Optometry in Chicago, graduating Cum Laude in 2013. Receiving recognition for her interest in low vision and ocular disease, Dr. Wedeking proceeded to complete a one year residency at the Veteran’s Affairs Hospital in West Haven, CT, where she gained clinical experience in the treatment and management of various ocular diseases including macular degeneration, diabetic retinopathy, and glaucoma. She also became an expert in low vision optometry and managing vision problems associated with acquired brain injury. Both during and after residency, Dr. Wedeking practiced at several different optometric modalities before joining Colchester and Hebron Eye Care:

“I wanted to join a practice that shares the same high standards and quality of care that I strive to provide for my patients. Colchester and Hebron Eye Care is the perfect fit because everyone works together as a team and understands that patient care is our first priority. Not only that, but everyone here loves what they do. It’s such a welcoming environment and I’m grateful to be working with such an amazing group!”

As an advanced care optometrist, Dr. Wedeking provides thorough ocular health and functional vision assessments to diagnose and treat patients of all ages. She is devoted to helping people and has traveled as far as Kenya, Africa to provide eye care on a VOSH mission. She is CPR certified and an active member of the American Optometric Association and the Connecticut Association of Optometrists. After moving to Connecticut from the Midwest in 2013, Dr. Wedeking has made it her home and fits right in with the Colchester and Hebron Eye Care family. In her free time, Dr. Wedeking loves traveling (especially to Iowa to see her family), spending time outdoors, journaling, and painting. We’re sure her warm smile and compassionate demeanor will make your office visit a positive experience!


Dr. Rupali Mistry

Dr. Rupali Mistry graduated Magna Cum Laude from Rutgers University with her Bachelors of Arts degree in Biology and Psychology. She then pursued Optometry at Pennsylvania College of Optometry at Salus University graduating with Highest Honors while also being the Treasurer at Beta Sigma Kappa (Honor Society).

Originally from New Jersey, Dr. Mistry enjoys hiking, traveling, volunteering, photography, and traditional Indian dance. She is also fluent in Hindi and Gujarati (both Indian dialects).

​​Through her prior experience, Dr. Mistry has advanced in the diagnosis and treatment of anterior and posterior ocular conditions. Dr. Mistry especially enjoys examining children due to their unique personalities.

Dr. Mistry is very excited to join Colchester and Hebron Eye Care because of their family work environment. She can’t wait to welcome you as her next patient!


Kathyann Lizotte

Ophthalmic Technician

Kathyann is our Ophthalmic Technician who will see you for pretest before our doctors complete your comprehensive eye exam.

Kathyann meets and greets the patients in a warm welcoming manner to get them prepared to see the doctor. She will review your history and address any concerns. She also performs the diagnostic testing to help the doctor diagnose eye disease such as glaucoma, macular degeneration, diabetic retinopathy and other eye disease. She also trains people how to wear and care for contact lenses.

Drs. Dempsey and Sadanowicz met Kathyann at a Colchester vision screening they assisted at in 2014. She had been employed in the eye care field as an ophthalmic technician in an ophthalmology practice for over 15 years. She is extremely bright and caring and conscientious and they knew instantly that she would fit in with our practice. We were lucky enough to convince her to join our practice in January of 2016. She is a dynamo! Her deep love and understanding of people and eye care are a rare combination. She has made the lives of both the patients and doctors better every day.

Kathyann enjoys cooking, spending time with her family, music, hiking and enjoying the outdoors.”I love helping people see! I love working at Colchester Eye Care because I know patients will get a thorough eye exam and can improve their vision ,* whether it be with contact lenses* or some very* fashionable eye glass or sunglass frames. I think Colchester Eye Care is the best practice. The Doctors provide compassionate and personalized eye care for all of our patients,* as well as provide them with the greatest* eye care,* diagnostic, and treatment options. They take their time to talk to the patients and let them know important information about their eye conditions as well as to describe treatment options.

I love working here!* The doctors are absolutely the best,* and the staff here at Colchester Eye Care is very passionate, social and trustworthy, and make me feel like part of a family.”