Eye health check: Cataracts
Cataracts are the leading cause of blindness globally. According to data released by Medibank in 2018, more than 700,000 Australians suffer from cataracts. We share what cataracts are, how they occur and how you can treat this eye health issue.
What is a cataract?
A cataract is the clouding of the lens of the eye. The lens is a transparent, flexible tissue that sits directly behind the iris and pupil of the eye.
The purpose of the lens is to help focus light and images. As a cataract forms, less light enters the eye, and more light is needed to see.
What are the symptoms of cataracts?
Those with cataracts suffer from clouded vision, like looking through fogged-up glass. Cataract patients struggle to see detail, and driving at night is particularly challenging, due to the glare from oncoming headlights.
Other cataract symptoms may include sensitivity to light, seeing ‘halos’ around lights, frequent changes in lens prescriptions, fading colours – often with a yellow hue – and double vision in a single eye.
Cataracts most commonly affect both eyes; however, they can advance at different paces.
“While cataracts are a natural part of ageing, modern treatment makes clear, sharp vision possible again.”
What causes cataracts?
Cataracts are an eye health issue where proteins and fibres in the lens break down, affecting the tissue of the eye lens.
According to the Mayo Clinic, as the cataract develops, the clouding becomes denser. A cataract scatters and blocks the light as it passes through the lens, preventing a sharply defined image from reaching your retina.
As a result, your vision becomes blurred. Age and injury are the most common causes of cataracts, which develop slowly. In time, cataracts interfere with your vision. Patients with other genetic disorders or health conditions may be at an increased risk of developing cataracts.
Identifying cataracts
Cataracts are diagnosed via an eye test conducted by an optometrist. They examine the eye’s lens using a specialised magnifying instrument called a slit lamp, biomicroscope or ophthalmoscope.
Additional tests we conduct at Ian Donald Optometrists may include a visual acuity test (the test where you’re asked to identify letters that get smaller and smaller), a retinal exam or tonometry, which measures the fluid in your eye.
Treating cataracts
Fortunately, advances in ophthalmic research and technology for cataracts mean that this eye condition can be effectively treated. This treatment may include recommendations for better lighting for strenuous eye activities like reading or screen time or, in more severe cataract cases, safe and effective surgery.
In fact, according to Medibank, in 2015-2016, cataract removal was one of the most common elective surgeries taking place nationally.
Regular eye health checks are essential in maintaining eye care, especially if you are predisposed to eye conditions or other chronic illnesses. Make an appointment and chat with our eye experts.
Meet the Author
Ian Donald
Optometrist
Ian Donald had a vision.
He was going to become a dentist. It seemed like a good plan, until his careers adviser gave him a brochure on optometry. It opened up a whole new world. The eye intrigued him. It fascinated him. Optometry captivated him. And so his whole focus changed.
Ian went on to do work experience in the very office he owns today. While studying Optometry at the prestigious UNSW, he spent hours working in that same office, doing all the things no one else wanted to do. Filing. Filing. Filing.
Learning, learning, learning. It’s part of who he is.
Even today he is constantly training and retraining, studying and staying up to date with the latest technology in eye health.
So what else energises Ian?
‘Riding my bike, being part of the community, and helping people see. It gives me the best feeling possible. We take it for granted, because we do it all day, every day. It’s such a gift to be able to give people peace of mind.’ Read More
FAQs
How do cataracts develop for residents in Manly and Collaroy?
Cataracts form when proteins in the eye’s lens start to break down, causing cloudiness that scatters light and blurs vision over time. Learn more about how cataracts develop on our site.
What are common early symptoms of cataracts that Balgowlah and Freshwater locals should watch for?
Symptoms often include blurry vision, increased glare, and trouble seeing clearly at night—signs that should prompt an eye check. Read more on how to identify cataract symptoms.
How are cataracts diagnosed at the clinic in Dee Why?
Our team uses tools like a slit lamp, biomicroscope, and tonometry during a comprehensive eye exam to evaluate lens changes and assess for cataract development. Discover how we diagnose cataracts.
What are the treatment options for cataracts available to Brookvale residents?
When cataracts begin to affect daily life, the most effective solution is a simple, well-proven surgical procedure that replaces the old lens with a clear
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Shop 2, 37-39 The Corso,
Manly NSW 2095
Monday to Friday - 8.30am to 5.30pm
Saturday - 8.30am to 4.00pm
Ian Donald Optometrist is a private billing practice. Please contact reception for our consultation fee schedule. Medicare and private health insurance rebates apply.
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