New Tecumseth Optometry Clinic
4 Victoria St E Alliston ON L9R 1T4 (705) 435-2020

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Alliston, ON
(705) 435-2020
New Patients Today!

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Amblyopia (Lazy Eye)

Amblyopia, also known as lazy eye, is a serious vision condition that is commonly, but not always, associated with advanced strabismus (crossed eyes).
When one eye has different vision than the other, the brain may begin to suppress one of the images it receives, usually from the crossed eye, so that a single image is processed, instead of two conflicting images. This is even more common should one eye be damaged from trauma or disease, or sending out of focus images compared to a dominant eye.
Amblyopia is a neurological condition, meaning that while the biological function of the eye (to receive and transmit light signals to the brain) may be perfectly normal, the loss of vision occurs in the brain itself.
If the image suppression occurs over a long enough time period, vision loss can be permanent and irreversible.

Symptoms of Amblyopia

Many symptoms are shared with strabismus, including:

  • Visibly crossed eyes
  • Double vision
  • Vertigo
  • Dizziness
  • Issues with depth perception

Some symptoms more unique to amblyopia include:

  • Decreased vision in one eye with no trauma or disease in the eye
  • The need to tilt the head or squint excessively to equalize vision between both eyes
  • Headaches or migraines associated with decreased vision

It is very common for symptoms of amblyopia to appear in children, however the condition can occur at any age. In children especially, if any symptoms of strabismus or amblyopia are noticed, it is important to have the child examined by an Ophthalmologist to begin corrective treatment as soon as possible.

Treatment of Amblyopia

The most effective treatment for amblyopia includes a continuing course of vision therapy to help train the lazy eye to return to normal function, used alongside vision correction such as eyeglasses or contact lenses. As well, should the amblyopia be severe enough, eye patch treatment with the dominant eye covered can also be used to help the brain recognize that the lazy eye needs to be brought to full functionality.
In very extraordinary cases, surgery may be required to realign the lazy eye, however this is often seen as a resolution of last resort.
If amblyopia is detected early and treated effectively, vision loss is preventable with many patients returning to fully functional vision. As well, with effective treatment, amblyopia may never occur again in the same patient.

What You'll Find at New Tecumseth Optometry

Our clinic is completely wheelchair accessible and has been recently renovated to update our exam and testing rooms. You’ll also find our eyewear boutique showing off many of the latest styles of frames and sunglasses from trendy new brands, as well as your old favourites from brands you already love.

Thanks to our on-site lab, we are able to significantly reduce the lead time between when you receive your prescription and when your new set of glasses or sunglasses are ready. Using our Optics Lab, we are better able to monitor quality of the lenses and frames that we offer our patients and clients.

At NTOC we have the most advanced imaging equipment, and our newest addition the Zeiss Clarus 500 Widefield Fundus Camera is changing the game! This camera takes 210-degree panoramic photos which allows our doctors to see down to 7 microns and captures retinal changes at the earliest stage. It is a very useful tool for early diagnosis and management of eye diseases including AMD, diabetic eye disease, and glaucoma.

Location Information

We are located in the heart of Alliston.
You can find us near Shoppers Drug Mart, just south of Victoria Street East on Centre Street South.

Free parking is available in the municipal parking lot directly across the street from us. We do have a wheelchair-accessible parking spot at our building. Please refrain from parking in the Shoppers Drug Mart parking lot as you may be towed.


15 Centre Street South
Alliston, ON L9R 1G8

Contact Information

Phone: (705) 435-2020
Fax: (705) 435-5031
  • Monday: 8am - 4pm
  • Tuesday: 8am - 6pm
  • Wednesday: 12pm - 8pm
  • Thursday: 8am - 6pm
  • Friday: 8am - 4pm
  • Saturday: 8am - 2pm
  • Sunday: Closed

Please note we closed on the Saturday and Monday of long weekends.

  • Dr. Hani Amarnath
  • Dr. John Peacock
  • And Associates
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