Clearer Vision Ahead: Understanding Cataracts
Cataracts cloud the eye's natural lens slowly, often without you noticing. At Dr. Della Chow | Optometry, we detect them early, track how they progress, and guide you through every stage of care — including co-managing surgery when the time is right
Clearer Vision Ahead: Understanding and Managing Cataracts
Clear vision shapes how you experience everything — reading on a rainy Vancouver afternoon, recognizing a friend across the seawall, or driving home after dark. When cataracts begin to cloud your sight, those everyday moments can start to feel dim and hazy. At Dr. Della Chow | Optometry, Dr. Della Chow — a trusted optometrist in Kitsilano — provides thorough eye exams to detect cataracts early and guide you through every stage of care, from your first blurry days to co-managing surgery.
Cataracts are one of the most common eye conditions we see — and one of the most treatable. In fact, they’re the leading cause of vision loss worldwide, yet nearly all of that vision can be restored. The key is understanding what a cataract is, catching it early, and knowing when it’s time to act.
What Are Cataracts?
A cataract is a clouding of the eye’s natural lens — the clear, flexible structure that sits behind your pupil and focuses light onto the retina. When you’re young, this lens is crystal clear. Over time, the proteins inside it begin to break down and clump together, making the lens cloudy or yellowed.
Think of it like looking through a foggy or frosted window: light still gets through, but the image becomes blurry, dull, and less sharp. Because cataracts usually develop slowly over months or years, many people don’t notice the change until it starts to interfere with reading, driving, or recognizing faces.
Cataracts most often come with age, but they aren’t only an “older person’s” condition — they can appear earlier due to genetics, injury, or certain health factors. The good news is that cataracts are highly treatable, and a comprehensive eye exam can catch them long before they seriously affect your sight.
Types of Cataracts
Not all cataracts are the same. They’re often classified by where they form in the lens and what causes them.
Nuclear (Age-Related) Cataracts
The most common type. These form in the centre (nucleus) of the lens and are usually linked to natural aging. They can cause a gradual yellowing and, in early stages, a temporary improvement in near vision some people call “second sight.”
Cortical Cataracts
These develop in the lens cortex — the outer edge — and work their way inward like the spokes of a wheel. They often cause problems with glare and light scattering.
Posterior Subcapsular Cataracts
These form at the back of the lens and tend to progress faster than other types. They especially affect reading vision and cause glare or halos around lights, making them particularly noticeable at night. They’re more common in people with diabetes or those using steroid medications.
Congenital Cataracts
Some people are born with cataracts or develop them in childhood, often due to genetics, infection during pregnancy, or metabolic conditions. Early detection through a children’s eye exam is essential to protect developing vision.
What Causes Cataracts — and Who's at Risk?
Cataracts form as the proteins in your lens change over time. While aging is the biggest factor, several things can speed up the process or raise your risk:
- Age: most cataracts begin developing after age 40 and become common after 60
- Diabetes and other health conditions
- Excessive UV exposure from the sun
- Smoking and heavy alcohol use
- Long-term steroid medication use
- Previous eye injury, inflammation, or surgery
- Family history of cataracts
- High blood pressure and obesity
Many of these risk factors overlap with other eye conditions like glaucoma, which is one reason a full eye health assessment matters — it looks at the whole picture, not just one problem.
Common Symptoms of Cataracts
Cataract symptoms tend to creep in gradually. Early on, you may not notice much at all. As the lens clouds further, common signs include:
- Blurry, cloudy, or dim vision that glasses don’t fully fix
- Increased sensitivity to glare from sunlight or headlights
- Halos around lights, especially when driving at night
- Faded or yellowed colours
- Difficulty seeing in low light
- Frequent changes to your glasses or contact lens prescription
- Double vision in one eye
If you find yourself turning on more lights to read, struggling with night driving, or updating your prescription more often than usual, it’s worth booking an exam. These everyday frustrations are often the first clue that a cataract is forming.
How Cataracts Are Diagnosed
Cataracts are straightforward to detect during a routine eye exam — often before you’ve noticed significant changes yourself. At Dr. Della Chow | Optometry, an assessment may include:
- Visual acuity test: measures how clearly you see at various distances
- Slit-lamp examination: uses a specialized microscope to examine the lens and other structures in detail
- Dilated eye exam: widens the pupil so we can see the full lens and retina and gauge how advanced a cataract is
- Refraction: checks whether an updated prescription can still sharpen your vision
Because cataracts often develop alongside other age-related changes, a thorough exam also screens for conditions like glaucoma and macular degeneration at the same time.
Treatment Options for Cataracts
Treatment depends entirely on how much the cataract is affecting your daily life.
In the early stages, you may not need surgery at all. Vision can often be managed with:
- Updated glasses or contact lens prescriptions
- Brighter, well-positioned lighting for reading and tasks
- Anti-glare lenses and sunglasses to reduce light sensitivity
- Magnification for detailed close work
When cataracts advance to the point where they interfere with driving, working, or enjoying life, cataract surgery is the definitive treatment. It’s one of the most common and successful procedures performed today: the clouded natural lens is removed and replaced with a clear artificial lens (called an intraocular lens, or IOL). Most people notice dramatically clearer vision within days.
As your optometrist, Dr. Della Chow plays an important role in this journey — detecting the cataract, determining when surgery is appropriate, referring you to a trusted ophthalmologist, and providing pre- and post-operative co-management to make sure your recovery goes smoothly. You don’t have to navigate it alone.
Prevention and Protecting Your Eyes
You can’t always prevent cataracts, but you can slow their development and protect your overall eye health:
- Wear UV-blocking sunglasses year-round — even on cloudy Vancouver days
- Quit smoking and limit alcohol
- Eat a diet rich in leafy greens, colourful fruits, and vitamins C and E
- Manage health conditions like diabetes and high blood pressure
- Book regular comprehensive eye exams so any changes are caught early
Consistent eye exams in Vancouver are your best tool — they let us track subtle changes over time and step in at exactly the right moment. For more on protecting your vision, the Canadian Association of Optometrists is an excellent resource.
Got Questions? We’ve Got Answers
Are cataracts reversible?
Cataracts can't be reversed with drops, medication, or lifestyle changes — once the lens clouds, it stays that way. However, cataract surgery completely removes the clouded lens and replaces it, restoring clear vision for the vast majority of people.
At what age do cataracts start?
Most age-related cataracts begin forming after age 40, though they often don't affect vision noticeably until the 60s or later. Cataracts can appear earlier with diabetes, eye injury, or genetic factors.
Is cataract surgery safe?
Cataract surgery is one of the most common and successful procedures performed today, with a very high success rate. Most people experience clearer vision within a few days. Your optometrist helps determine the right timing and co-manages your care before and after.
Can an optometrist detect cataracts?
Yes. Cataracts are easily identified during a comprehensive eye exam, often before you've noticed symptoms. Your optometrist monitors their progression and guides you on when treatment or a surgical referral is needed.
Don't Let Cataracts Cloud Your View
Cataracts develop slowly — but you don’t have to live with fading, foggy vision. With early detection and the right plan, clear sight is well within reach.
If your vision has felt dimmer lately, glare bothers you more than it used to, or it’s simply been a while since your last exam, now’s the perfect time to book. As your local optometrist in Kitsilano, our team at Dr. Della Chow | Optometry is here to help you see clearly and confidently for years to come.