Diabetes affects many parts of the body which includes the eyes. Of its serious eye complications is proliferative diabetic retinopathy. This advanced form of diabetic retinopathy forms when damaged retinal blood vessels decrease the supply of oxygen to the retina. In response the eye begins to grow abnormal new blood vessels. These fragile vessels may bleed and in that they put vision at risk.
People out of the blue may not see the warning signs in the early stages of diabetes. But once proliferative diabetic retinopathy sets in we see the importance of timely evaluation. It is also to do with recognizing the symptoms, getting the diagnosis early and familiarizing yourself with what is available in terms of proliferative diabetic retinopathy treatment which in turn will help patients to protect what vision they have.
What Is Proliferative Diabetic Retinopathy?
Proliferative diabetic retinopathy is a late stage of diabetic retinal disease. High blood sugar over a long term damages the small blood vessels which supply the retina. As retinal circulation breaks down, parts of the retina may suffer from a lack of oxygen.
The retina’s response is to release signals which in turn promote new blood vessel growth. Also these vessels are abnormal and fragile. In PDR ophthalmology, you may hear the term neovascularization. Also the new vessels may grow over the retina or into the vitreous, the clear gel which fills the eye.
This is also what we term proliferative retinopathy which is characterized by growth of abnormal blood vessels. If left untreatable this stage may lead to vitreous hemorrhage, scar tissue development, or retinal detachment.
| Stage | What Happens in the Eye | Possible Effect |
| Non-proliferative diabetic retinopathy | Existing retinal vessels weaken, leak, or become blocked | Vision may remain normal initially |
| Proliferative diabetic retinopathy | Abnormal new blood vessels develop | Increased risk of bleeding and severe vision loss |
Symptoms of Proliferative Diabetic Retinopathy
Early in diabetic retinopathy often there are no signs at all. Also by the time a person is made aware of the retina’s change it may be in the midst of proliferative diabetic retinopathy.
As the disease progresses people may notice blurred or fluctuating vision. In some people dark spots, cobweb like shadows or sudden floaters present when abnormal vessels bleed into the vitreous. Also some patients with PDR eye disease may report areas of missing vision or a sudden drop in sight.
A sudden appearance of floaters, a dark shadow over the field of vision or large scale vision loss requires prompt eye care. These symptoms may report vitreous hemorrhage or retinal detachment related to proliferative retinopathy.
How Is PDR Diagnosed?
An ophthalmologist diagnoses proliferative diabetic retinopathy with a comprehensive retinal exam. During the dilated eye exam the doctor looks for new blood vessels, retinal bleeding, swelling, and scar tissue.
Doctors in the field of pdr ophthalmology may also put forth retinal imaging as a solution. Optical coherence tomography studies retinal and macular changes. Fluorescein angiography may play a role in the identification of abnormal blood vessels, leakage, and areas that have reduced circulation.
Regular diabetic eye examinations matter because proliferative diabetic retinopathy can develop before significant symptoms appear.
Proliferative Diabetic Retinopathy Treatment
The choice of proliferative diabetic retinopathy treatment depends on the condition of the retina, bleeding, macular involvement, and the presence of scar tissue.
| Treatment | How It May Help |
| Anti-VEGF injections | Reduce signals responsible for abnormal blood vessel growth |
| Panretinal photocoagulation | Uses laser treatment to reduce abnormal vessel development |
| Vitrectomy | Removes vitreous blood and may address severe scar tissue or retinal complications |
Anti-VEGF medicines may reduce abnormal blood vessel activity in proliferative diabetic retinopathy. These injections often require regular follow-up.
Panretinal photocoagulation also going by scatter laser treatment is still a very relevant proliferative diabetic retinopathy treatment. The laser is used in the peripheral retina at strategic points and what it does is reduce the signals which incite abnormal blood vessel growth.
People with advanced PDR eye complications may see the need for vitrectomy. We may go to the operating room when there is persistent vitreous hemorrhage which is blocking vision or when scar tissue is a risk to pull the retina away from the back of the eye.
Managing blood sugar, blood pressure, and cholesterol also is a key part of care. We see that treatment can improve vision issues, also which well managed diabetes may prevent further retinal damage.
Can Proliferative Diabetic Retinopathy Cause Blindness?
Yes. Untreated proliferative diabetic retinopathy may cause very serious and at times permanent vision loss. Also it is the case that weak blood vessels may bleed over and over again, also scar tissue can form and cause tractional retinal detachment.
However that does not mean if you have proliferative diabetic retinopathy you will go blind. Early diagnosis, appropriate treatment, regular retinal check ups, and better diabetes control improve outlook greatly.
Conclusion
Proliferative diabetic retinopathy is what many people think of as the primary complication of diabetes which affects vision but early intervention can make a great difference. People with diabetes should not delay in getting an eye exam which may show signs of the disease in its early stages. Annual retinal screening is key to catching things which may be present.
If it is diagnosed that a patient has proliferative diabetic retinopathy or any other form of diabetic retinal damage, an ophthalmologist will put forth appropriate monitoring and treatment options. At ASG Eye Hospital we invite patients to see our eye specialists for retinal assessment, diabetic eye screening, and we present them with a very personal management plan based on the patient’s unique eye health.
Frequently Asked Questions
1. Is proliferative diabetic retinopathy serious?
Yes. Proliferative diabetic retinopathy is a late stage of diabetic eye disease which at times causes vision loss through bleeding out, growth of abnormal blood vessels, and retinal detachment.
2. What is PDR in ophthalmology?
In pdr ophthalmology, PDR stands for proliferative diabetic retinopathy. It is the stage at which the retina starts to develop abnormal new blood vessels in response to lack of blood supply.
3. What are the common PDR eye symptoms?
Common PDR eye symptoms include blurred vision, new floaters, dark spots, reduced vision, and in some cases sudden vision loss. At first some patients may not have many symptoms.
4. Can proliferative retinopathy be treated?
Yes. In terms of treatment for proliferative retinopathy we have anti-VEGF injections, retinal laser treatment, vitrectomy, or a combination of the above based on the patient’s retinal condition.
5. Does PDR treatment restore lost vision?
Proliferative diabetic retinopathy treatment is mainly for the control of abnormal blood vessels and to prevent more damage. Some patients do see an improvement in vision but we can’t always reverse loss which is a result of permanent retinal damage.
References
National Eye Institute (NIH) – Diabetic Retinopathy: explains symptoms, risk factors, diagnosis, and treatment including injections, laser, and surgery.
https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/diabetic-retinopathy
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) – Diabetic Eye
https://www.niddk.nih.gov/health-information/diabetes/overview/preventing-problems/diabetic-eye-disease
