Dr. Jessica Nhan, Markham Optometrist, eye exam, eye doctor, contact lenses, eye glasses, ortho-k, orthokeratology, downtown markham

What is a Doctor of Optometry?

Many people have a misconception about eye health. They believe a visit to the eye doctor or optometrist is only required when a new prescription is required for new eye glasses, but a Doctor of Optometry is so much more than that. As Doctors of Optometry, we evaluate many factors that can affect your vision and eye health. We review your case history, conduct an external and internal examination of your eyes and measure vision qualities, such as eye movements and coordination, sharpness of vision and peripheral vision. We also evaluate your ability to adjust focus, and to see colour and depth normally. If we detect problems we may recommend eye glasses, contact lenses, eye exercises or surgery. Many serious eye conditions do not cause obvious symptoms such as decreased vision, pain, redness or discharge. Some eye diseases only show symptoms when the condition has advanced to a point where it is more difficult to treat, or may be irreversible. A comprehensive eye exam allows for these conditions to be detected and treated early.

How often should you get an eye exam?

How often you see Dr. Jessica Nhan and associates, your Markham Optometrist, depends on your age, and any existing health conditions. Please consult the section below for the recommended frequency.

Infants (6 months - 9 months)


Children (2 yrs - 5 yrs)

At least once

Children (6 yrs - 19 yrs)


Adults (20 yrs - 64 yrs)

Every 2 years (biennial)

Seniors (65+ yrs)


With Health issues (any age)

Health issues include: diabetes, multiple sclerosis, macular degeneration, glaucoma, etc.