Seeing the bigger picture: Why eye health matters in the fight against dementia

Dementia is already one of Australia’s biggest health challenges, and the numbers are only going up.

Right now, around 411,000 Australians are living with dementia.

By 2065, that figure is expected to more than double, with over one million people affected.

That means most of us will, at some point in our lives, know a parent, partner, grandparent, neighbour or friend who lives with the condition.

The hidden link between dementia and vision 

When we talk about dementia, the conversation often focuses on memory loss, personality changes and the challenges of daily living.  

However, what many people don’t realise is that vision plays a significant role in this story. 

In fact, international research suggests that almost one in five dementia cases in older adults could be linked to untreated vision problems. That’s huge.

How vision problems affect brain health 

Consider this: needing glasses, living with cataracts or struggling to see contrast clearly may seem like relatively minor problems, but they can have far-reaching effects that extend far beyond vision.  

Poor vision can make people less confident about leaving the house, more hesitant to drive, or less able to participate in the activities they love.  

It can limit social connections, reduce physical activity and increase the risk of accidents.  

Over time, these changes erode independence and mental stimulation, two key pillars for protecting brain health.

Prevention starts with early detection 

The good news is that many of these vision issues are treatable and regular eye exams are a powerful tool for early detection.  

Conditions like cataracts, glaucoma and macular degeneration often creep in without obvious warning signs, but when picked up early, some treatments can slow progression or restore clarity.  

Even something as simple as updating glasses can make a significant difference, helping people stay active, socially engaged and less at risk of falls.

Eye care matters for those already living with dementia 

For individuals already living with dementia, eye care is equally important. Vision problems can add to confusion, reduce confidence and make day-to-day life harder than it needs to be.  

Addressing these issues, whether through new glasses, cataract surgery or simple environmental adjustments like improved lighting and reduced glare, can make life safer, less stressful and more enjoyable. 

Dementia Action Week: a timely reminder 

This Dementia Action Week (15–21 September) is a reminder that brain health isn’t just about puzzles, diet and exercise, though all those things help too.  

It’s about taking a holistic approach, and that includes caring for our eyes.  

So, book that eye exam if you’re due.  

Offer to take your parents or grandparents along to theirs. Share what you know with friends and family.  

Because looking after vision isn’t just about seeing clearly today; it’s about protecting memory, independence and quality of life tomorrow. 

To find your closest dementia-friendly optometrist, check out our "Find an Optometrist” search tool today.

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