Summary: 

  • Diabetic retinopathy causes no symptoms in its early stages, meaning significant damage can occur before you notice any change in your vision.
  • Type 1 diabetics should be screened within five years of diagnosis; Type 2 diabetics should be screened at the point of diagnosis.
  • Risk factors, including high HbA1c, high blood pressure, kidney disease, and pregnancy, may mean you need screening every six months rather than annually.
  • Early detection significantly increases your treatment options, with patients identified at mild or moderate stages far less likely to need surgical intervention.

You are probably managing your blood sugar, watching what you eat, taking your medication, and keeping up with your doctor’s appointments.

So it might feel strange to be told that your eyes could be quietly developing a serious problem right now. But that is what diabetic retinopathy is: damage to the blood vessels at the back of the eye that builds slowly and without any signal that something is wrong.

Keep reading to find out if and when you should have diabetic retinopathy screening, and why it cannot wait until your vision starts to change.

Why Diabetic Patients Need an Eye Screening, Even Without Symptoms

Here is the part that surprises most people: you can have significant retinal damage and still pass a basic vision test. 

Diabetic retinopathy does not announce itself. It does not blur your vision in the early stages, it does not cause pain, and it does not give you any signal that something is wrong. 

By the time you notice something, the window for the simplest treatment options may have already closed.

The Silent Nature of Diabetic Retinopathy

The retina has no pain receptors. This means that bleeding, swelling, and the growth of abnormal blood vessels can all happen at the back of your eye without you feeling a thing. 

Diabetic retinopathy can sit in its early and middle stages for years, completely invisible to you, while quietly progressing.

Why Waiting for Symptoms May Already Be Too Late

By the time vision changes become apparent, the condition may have already progressed, making treatment more complex and increasing the risk of permanent vision loss.

This is why regular eye screenings are so important for people with diabetes. Early detection allows eye specialists to identify changes in the retina before symptoms occur, enabling timely treatment and better long-term outcomes.

If you are due for a check-up, find out what a diabetic retinopathy screening at Asia Retina involves and take the next step towards safeguarding your eye health. Contact us today.

How Does Diabetic Retinopathy Develop?

This is not a condition that appears overnight. It is a slow process, and that pace is part of what makes it so easy to miss until it reaches a critical stage.

What High Blood Sugar Does to the Blood Vessels in Your Eye

This is not a condition that appears overnight. It is a slow process, and that pace is part of what makes it so easy to miss until it reaches a critical stage.

Diabetic Retinopathy illustration between a normal eye and an affected eye

Your retina relies on a dense network of tiny blood vessels to function. When blood glucose stays elevated over time, those vessels begin to break down. They weaken, leak, swell, and in some cases block up entirely. 

Starved of proper blood supply, your eye attempts a workaround: it grows new vessels to compensate. But these replacements are poorly formed and fragile. They bleed easily. And that is when vision loss becomes a real and serious risk.

The Four Stages of Diabetic Retinopathy

Diabetic retinopathy progresses through four distinct stages:

Stage

Name

What is happening

1

Mild NPDR

Small areas of swelling (microaneurysms) form in the retinal blood vessels

2

Moderate NPDR

More vessels become blocked or damaged

3

Severe NPDR

Widespread blockage deprives sections of the retina of its blood supply

4

Proliferative DR (PDR)

Abnormal new blood vessels begin to grow; the risk of significant vision loss is high

Diabetic macular oedema (swelling at the central retina responsible for sharp, detailed vision) can occur at any stage and is one of the more common causes of vision loss in diabetics.

How Quickly Can It Progress?

The honest answer is that it varies considerably from person to person. Good control of blood glucose and blood pressure can slow things down significantly. Poor control can accelerate them. There is no reliable way to know where you sit without having your retina examined regularly.

Do not wait for your vision to change before you act. Book a diabetic eye screening with Dr Claudine Pang.

Who Should Be Getting Screened, and How Often?

Not everyone’s diabetic retinopathy screening schedule looks the same. How long you have had diabetes, which type you have, and what else is going on with your health all play a role. 

The guidelines below are a starting point, but your eye specialist will advise you based on your individual situation.

Screening Guidelines for Type 1 and Type 2 Diabetes

If you have Type 1 diabetes, the recommendation is to have your first comprehensive eye examination within five years of diagnosis, and then annually after that. If you have Type 2 diabetes, you should be screened at the point of diagnosis, not five years later. 

The reason is important: Type 2 diabetes is often present for some time before it is actually identified, which means retinal changes could already have begun by the time you receive your diagnosis. After a normal initial result, annual screening is the standard for most patients.

Risk Factors That May Mean You Need More Frequent Screening

You may need more frequent screening if any of the following apply to you:

  • Poor long-term blood glucose control (high HbA1c)
  • High blood pressure
  • Kidney disease
  • Pregnancy
  • Long duration of diabetes
  • Prior diagnosis of retinopathy at any stage

If several of these apply, your eye specialist may recommend screening every six months rather than annually.

Should You Go to a GP or a Specialist for Screening?

GPs and polyclinics in Singapore can carry out basic diabetic eye screening, and that is a perfectly reasonable starting point. But if your results show any signs of retinopathy, or if you have multiple risk factors, you should seek diabetic retinopathy treatment in Singapore from a retinal specialist. 

A specialist has access to more detailed imaging technology and the clinical experience to interpret subtle findings accurately.

What Does a Diabetic Eye Screening Involve?

Here is what typically happens, step by step:

  1. Eye drops are applied to dilate your pupils. Allow 20 to 30 minutes for these to take effect. Arrange a lift home afterwards, as your vision will likely be blurred for a few hours.
  2. Fundus photography captures detailed images of your retina, optic disc, and blood vessels.
  3. Optical coherence tomography (OCT) produces cross-sectional images of the retina and can detect swelling or fluid at the macula before you notice any change in your vision.
  4. Fluorescein angiography may be used in some cases, involving a dye injected into the arm to highlight blood vessel activity and check for leakage or abnormal vessel growth.
  5. Your eye specialist reviews the images and grades any findings. Results are discussed with you at the appointment.

The whole appointment takes between 30 and 60 minutes. None of the tests is painful, though the bright light used during the examination can be briefly uncomfortable.

What Happens If Your Screening Reveals Something?

A finding on your screening is not a reason to panic. It does not automatically mean surgery, and it does not mean your vision is in immediate danger. 

What it means is that your specialist now has something concrete to work with, and in the majority of cases, early findings are very manageable.

Understanding Your Results

Your results will be graded according to what, if anything, was found. A normal result means no signs of retinopathy were detected, and you will be advised when to return. 

Mild or moderate findings typically point to closer monitoring and tighter blood glucose management rather than immediate intervention. More significant findings will open up a conversation about treatment options.

Diabetic Retinopathy Treatment Options in Singapore

The right treatment depends on what was found and how severe it is. 

For diabetic macular oedema, anti-vascular endothelial growth factor (anti-VEGF) injections (medication injected directly into the eye to reduce abnormal vessel growth and fluid leakage) are typically the first-line approach and have shown strong results in stabilising or improving vision in many patients. 

Laser photocoagulation (a procedure using focused light to seal leaking vessels or slow abnormal vessel growth) remains an option in certain cases. In severe PDR with significant bleeding, vitrectomy (surgical removal of the vitreous gel from the eye) may be considered.

How Early Detection Changes Your Treatment Outcome

The earlier the finding, the more options you have and the less intensive the treatment tends to be. 

Patients identified at the mild or moderate NPDR stage are far less likely to need surgical intervention than those presenting with severe PDR or significant macular oedema.

Book a Diabetic Retinopathy Screening with Dr Claudine Pang

If you have diabetes, a dilated eye examination should be part of your routine, regardless of how sharp your vision feels today. 

At Asia Retina Eye Surgery Centre in Singapore, Dr Claudine Pang and her team provide comprehensive diabetic retinopathy screening with retinal imaging, giving you a clear picture of where things stand and a plan for what comes next.