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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Diabetic Eye Disease

Diabetes is a condition that affects up to 2 million Canadians over the age of 12 according to a Statistics Canada report issued in 2010. While the more common effects of diabetes are relatively well known, such as low insulin production and adverse conditions caused by high blood sugar, what is less commonly known is that diabetes can have a direct and adverse effect on vision.


Diabetes is a well known risk factor for both myopia (nearsightedness) and hyperopia (farsightedness), and most diabetics have an increased likelihood of needing vision correction at some point in their life.
The highest risk faced by diabetics is for a specific type of vision condition known as retinopathy. This condition occurs when fine blood vessels inside the eye and retina, which are extraordinarily sensitive to blood and circulation conditions such as diabetes and arterial hypertension, can become damaged and/or leak, causing pressure to build up inside the eye. If left untreated, retinopathy is one of the leading causes of blindness in diabetics.
Early detection of retinopathy is key in preventing vision loss, and can occur with regular testing during an eye exam using retinal imaging equipment. Once detected, retinopathy can be treated with orally administered medication, or, if necessary, laser therapy of the retina. In most cases, a combination of both medication and laser therapy is used to promote the the highest chance of continued vision.

Other Concerns For Diabetics

While retinopathy is the most worrying condition, diabetics are also at higher risk of developing other vision conditions such as glaucoma and cataracts. Diabetes has been known to cause sudden and pronounced visual distortions such as sudden tunnel vision (loss of peripheral vision), blurry vision, sudden and acute eye fatigue, and fluctuations in visual clarity.
Some vision conditions for diabetics may be the first signs of emergency symptoms that may be evidence of deeper issues. Black spots in vision, painfully bright flashes of light in vision while in a normal light environment, blurred vision that does not correct itself after a few seconds, or “holes” in vision (acute vision loss), are all symptoms of serious conditions including retinopathy, and should be investigated immediately, either at an optometrist’s or hospital emergency room.

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.
Found on the corner of Church St N and Victoria St E, our clinic is easy to find. If you are unfamiliar with the area, we are across the street from the Alliston Library, and just east of the Bank of Montreal.

Free parking is available behind the Dollar Store as well as the Town Square.


4 Victoria St E
Alliston, ON L9R 1T4

Contact Information

Phone: (705) 435-2020
Fax: (705) 435-5031
  • Monday: 8:30am - 5pm
  • Tuesday: 8:30am - 8pm
  • Wednesday: 8:30am - 8pm
  • Thursday: 8:30am - 8pm
  • Friday: 9:30am - 5pm
  • Saturday: 8am - 1pm
  • Sunday: Closed
  • Dr. Hani Amarnath
  • Dr. John Peacock
  • And Associates
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