Early Detection for Diabetic Eye Disease
Diabetic eye disease is silent, progressive, and best caught early. At Della Chow, We screen for diabetic retinopathy and related changes with detailed retinal imaging — spotting problems before symptoms start, protecting your sight, and keeping your vision clear for years to come
Diabetic Eye Disease: Protecting Your Sight with Diabetes
If you’re living with diabetes, your eyes deserve special attention. High blood sugar can quietly damage the delicate blood vessels inside your eyes long before you notice any change in your vision. Dr. Della Chow — a trusted optometrist in Kitsilano — provides thorough diabetic eye exams to catch these changes early, helping you protect your sight for the long run.
Diabetic eye disease is one of the leading causes of vision loss in working-age adults in Canada — but much of that vision loss is preventable with early detection and good management. The challenge is that it often develops without symptoms in its early stages. Understanding how diabetes affects your eyes, and why regular exams matter so much, is the first step to keeping your vision healthy.
What Is Diabetic Eye Disease?
Diabetic eye disease is an umbrella term for a group of vision problems that can affect people with diabetes. It includes several related conditions:
- Diabetic retinopathy — the most common, where high blood sugar damages the tiny blood vessels in the retina
- Diabetic macular edema (DME) — swelling in the macula (your central vision area) caused by leaking blood vessels
- A higher risk of cataracts — which tend to develop earlier in people with diabetes
- A higher risk of glaucoma — increased eye pressure and optic nerve damage
The most significant of these is diabetic retinopathy. Over time, consistently high blood sugar weakens and damages the blood vessels that nourish the retina — the light-sensitive tissue at the back of your eye. These vessels can leak, swell, or close off, and in advanced stages the eye grows fragile new vessels that bleed. Left unchecked, this can lead to permanent vision loss. The encouraging news: with regular comprehensive eye exams and good diabetes management, most serious vision loss is preventable.
Types and Stages of Diabetic Retinopathy
Diabetic retinopathy generally progresses through stages, from mild to advanced.
Non-Proliferative Diabetic Retinopathy (NPDR)
The early stage, ranging from mild to severe. Blood vessels in the retina weaken, forming tiny bulges (microaneurysms) that may leak fluid or blood. Many people have no symptoms at this stage — which is exactly why screening is so important. NPDR is often where early detection can change the outcome.
Proliferative Diabetic Retinopathy (PDR)
The advanced stage. In response to damaged, closed-off vessels, the retina grows fragile new blood vessels (a process called neovascularization). These vessels can bleed into the eye, cause scar tissue, and lead to retinal detachment — a serious threat to vision that needs prompt treatment.
Diabetic Macular Edema (DME)
This can occur at any stage. Fluid leaks into the macula, the part of the retina responsible for sharp central vision, causing it to swell. DME is the most common reason people with diabetes lose reading and detail vision, and it can develop even when other retinopathy is mild.
What Causes Diabetic Eye Disease — and Who's at Risk?
The root cause is prolonged high blood sugar, which damages blood vessels throughout the body — including the eyes. Your risk increases with:
- How long you’ve had diabetes — the longer, the higher the risk
- Poorly controlled blood sugar (high A1C)
- High blood pressure and high cholesterol
- Pregnancy (which can accelerate changes)
- Smoking
- Type 1 or Type 2 diabetes — both carry risk
Anyone with diabetes — whether Type 1, Type 2, or gestational — is at risk, which is why diabetic eye exams are recommended for all people with diabetes, even those who feel their vision is perfectly fine.
Common Symptoms of Diabetic Eye Disease
One of the most important things to understand is that early diabetic retinopathy often has no symptoms at all. By the time vision changes appear, damage may already be underway. When symptoms do develop, they can include:
- Blurry or fluctuating vision
- Dark spots, floaters, or “cobwebs” in your vision
- Dark or empty areas in your sight
- Difficulty seeing at night
- Colours appearing faded or washed out
- Sudden vision loss (a medical emergency)
Because these symptoms often mean the disease has already advanced, you can’t rely on how your eyes feel to tell you whether they’re healthy. A dilated diabetic eye exam is the only way to catch changes early — while they’re still highly treatable.
How Diabetic Eye Disease Is Diagnosed
Detecting diabetic eye disease early requires a specialized, thorough exam. At Della Chow, a diabetic eye exam may include:
- Dilated eye exam: Drops widen your pupils so we can examine the retina and blood vessels in detail
- Optical coherence tomography (OCT): Cross-section imaging that detects retinal swelling and macular edema
- Fundus photography: High-resolution retinal images that let us document and track changes over time
- Visual acuity and pressure checks: To assess vision and screen for related conditions like glaucoma
These exams don’t just detect diabetic retinopathy — they also screen for macular degeneration and other conditions, giving you a full assessment of your eye health in one visit.
Treatment and Management of Diabetic Eye Disease
Treatment depends on the type and stage, but the foundation is always the same: managing your diabetes well. For a stage-by-stage guide, see what to expect from diabetic retinopathy treatment.
The first line of defence is systemic control:
- Keeping blood sugar (A1C) in your target range
- Managing blood pressure and cholesterol
- Not smoking
- Attending regular diabetic eye exams so changes are caught early
For more advanced disease, we coordinate specialist care, which may include:
- Anti-VEGF injections: Medications that reduce swelling and stop abnormal blood vessel growth — a primary treatment for macular edema and proliferative retinopathy
- Laser treatment (photocoagulation): Seals leaking vessels or shrinks abnormal ones
- Vitrectomy: Surgery to remove blood and scar tissue in advanced cases
As your optometrist, Dr. Della Chow plays a central role in this team — detecting changes early, monitoring your eye health between specialist visits, and referring you promptly to an ophthalmologist or retinal specialist when treatment is needed. Managing diabetic eye disease is a partnership, and we’re here to guide you through it.
Why Annual Diabetic Eye Exams Matter
If you take one thing away from this page, let it be this: regular eye exams are the single most powerful tool for protecting your vision with diabetes. Because diabetic eye disease can advance silently, an exam can detect it long before you’d ever notice a problem.
General guidance in Canada recommends:
- People with Type 2 diabetes: An eye exam at diagnosis, then regularly as advised
- People with Type 1 diabetes: An eye exam within five years of diagnosis, then regularly
- During pregnancy: More frequent monitoring, as diabetes-related changes can accelerate
- Everyone with diabetes: At least yearly exams, or more often if changes are found
Staying consistent with eye exams in Vancouver gives us the chance to protect your sight before problems take hold. For trusted Canadian guidance, Diabetes Canada is an excellent resource on managing diabetes and its complications.
Got Questions? We’ve Got Answers
How does diabetes affect the eyes?
High blood sugar over time damages the small blood vessels in the retina, causing them to leak, swell, or close off. This can lead to diabetic retinopathy, macular edema, and a higher risk of cataracts and glaucoma. Good blood sugar control and regular eye exams help prevent serious damage.
What are the first signs of diabetic retinopathy?
Early diabetic retinopathy often has no symptoms at all. As it progresses, you may notice blurry or fluctuating vision, floaters or dark spots, trouble seeing at night, or faded colours. Because early stages are silent, regular dilated eye exams are essential.
How often should a diabetic get an eye exam?
Most people with diabetes should have a comprehensive dilated eye exam at least once a year, and more often if changes are found or during pregnancy. Your optometrist will recommend the right schedule based on your type of diabetes and eye health.
Can diabetic retinopathy be reversed?
Early damage can sometimes stabilize or improve with good blood sugar control, but advanced damage is usually permanent. Treatment can slow or stop progression and protect remaining vision, which is why catching it early through regular exams is so important.
Protect Your Vision — Book Your Diabetic Eye Exam
Diabetic eye disease is serious, but it’s also highly manageable when caught early. With good diabetes control and consistent eye exams, most people with diabetes keep their vision healthy for life.
If you have diabetes and it’s been more than a year since your last eye exam — or you’ve noticed any changes in your vision — don’t wait. As your local optometrist in Kitsilano, our team at Della Chow is here to help you safeguard your sight, one exam at a time.