U of T researcher focuses on vision-care barriers for Ontario school children

a young girl, about age 6, taking an eye exam
As a manager of a vision-screening program in London, Ont., U of T PhD student Afua Oteng Asare noticed younger patients weren't having regular eye exams even though their vision care in Ontario is free (photo by Motortion/iStock via Getty Images)

Despite the fact that vision care coverage is offered in Ontario to individuals under the age of 20, only 14 per cent of children under the age of six had a vision exam as of six years ago.

For optometrists like Afua Oteng Asare (left), a PhD student at the University of Toronto’s Institute of Health Policy, Management and Evaluation, this is concerning because eye examinations for children at this age are key to diagnosing two very common and major conditions. The first are refractive errors, which include short-sightedness (myopia), long-sightedness (hyperopia) and blurred vision near and far (astigmatism). The second is amblyopia, commonly known as “lazy eye.” 


“These conditions are not always obvious just by observing a child,” says Asare. “What is most concerning is that if not detected and treated early, amblyopia in particular could cause irreversible vision loss by the age of seven or eight.”

Asare has been interested in examining barriers to vision care access since she first began her clinical practice as an optometrist in Ghana. She saw that most patients coming to have their eyes examined were of a higher socio-economic status and began to question how it might be possible to make vision care accessible to everyone.

“That experience sparked my curiosity about barriers to vision-care access in general,” says Asare. “It is also an area of health services that is sorely under-researched.”

Through her recent work as a manager of a vision-screening program in London, Ont., Asare also noticed younger patients were not having their eyes examined regularly, even though their vision care in Ontario is free.

A lack of awareness that coverage even exists in Ontario for school-age children appears to be one of the main barriers to vision-care access that Asare has encountered. Add to that the high cost of prescription glasses and a lack of available resources, including access to optometrists in rural areas, particularly for Indigenous Peoples, and the list of barriers continues to grow.

“For many policy-makers and health-care practitioners, vision care in childhood often ends up on the back burner because, unlike diabetes, cancers, infectious diseases or other common diseases, refractive errors and amblyopia may require a pair of glasses to help the issue, but the child isn’t at risk of dying,” explains Asare.

To better understand access to vision care for children, Asare has been analyzing the cost-effectiveness of the Ministry of Health and Long-Term Care’s recent child vision protocol. This work was recently presented at the Canadian Association of Health Services and Policy Research conference and the American Academy of Optometry meeting.

As part of Ontario’s public health standards, health units are now required to provide vision screening in all kindergarten classrooms.

Vision screening is not the same as an eye exam, says Asare. It is a simple and quick test that helps determine whether a person has risk factors for refractive errors or lazy eye that would require them to undergo a more extensive eye exam from an optometrist.

Impaired vision can have a substantial impact on quality of life. For children, delayed development in reading and writing, and later limited choices of occupation can be linked to socio-economic disadvantages and subsequent additional health problems. 

As part of her study, Asare has compared the current practice where vision screenings are conducted by pediatricians during “well-child” checks and found that the new in-school protocol appears to be more effective.

“Research has shown that vision screenings are not routinely done during well-child checks, and while the in-school screenings are a little more costly, our study has shown the benefits outweigh the price,” says Asare.

Moving forward, health policy-makers will use cost-utility studies like Asare’s to inform their decision on whether to continue the new screening protocol in kindergarten classrooms. As of now, no additional funding has been provided to health units to conduct this screening protocol and, as a result, not all are able to effectively provide it in schools.

“It would be ideal to mandate that all children must have an eye exam with an optometrist,” says Asare, “but vision screening is a step in the right direction, and one way to improve vision-care access in a relatively affordable way.”

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