Can Proliferative Diabetic Retinopathy Be Reversed?

Proliferative diabetic retinopathy (PDR) is an advanced stage of diabetic eye disease that can threaten vision if it is not treated promptly. It occurs when damaged blood vessels in the retina stop supplying enough oxygen to the eye, causing the growth of abnormal new blood vessels.

A common question among people diagnosed with proliferative diabetic retinopathy is whether the condition can be reversed. While existing retinal damage cannot always be completely reversed, proliferative diabetic retinopathy can often be treated and controlled to reduce the risk of further vision loss.

What Is Proliferative Diabetic Retinopathy?

Proliferative diabetic retinopathy is the more advanced form of diabetic retinopathy. High blood sugar levels can damage the small blood vessels that nourish the retina, the light-sensitive tissue at the back of the eye.

As diabetic retinopathy progresses, areas of the retina may become deprived of oxygen. In response, the eye may develop fragile abnormal blood vessels. These vessels can bleed into the vitreous, the gel-like substance inside the eye.

Without treatment, PDR may lead to complications such as:

• Vitreous hemorrhage
• Scar tissue formation
• Retinal detachment
• Severe or sudden vision loss
• Permanent blindness

Can Proliferative Diabetic Retinopathy Be Reversed?

In most cases, proliferative diabetic retinopathy cannot simply be reversed once permanent retinal damage has occurred. However, treatment can slow or stop the progression of the disease and help preserve remaining vision.

Some abnormal blood vessels may shrink or stop growing after treatment. If complications such as bleeding or retinal detachment have occurred, additional treatment may be necessary to address those problems.

The earlier proliferative diabetic retinopathy is detected and treated, the better the opportunity to protect vision.

How Is Proliferative Diabetic Retinopathy Treated?

Treatment depends on the severity of the disease and whether complications are present. An eye specialist may recommend one or more of the following treatments.

Anti-VEGF Injections

Anti-VEGF medications can reduce the activity of vascular endothelial growth factor (VEGF), a protein that promotes abnormal blood vessel growth.

These injections may help reduce abnormal blood vessels, swelling, and bleeding and are commonly used in the management of diabetic retinal disease.

Laser Treatment

Panretinal photocoagulation (PRP) is a laser treatment frequently used for proliferative diabetic retinopathy.

The laser is applied to areas of the peripheral retina affected by poor blood supply. This can reduce the retina's demand for oxygen and decrease the stimulus for abnormal blood vessel growth.

Vitrectomy

A vitrectomy may be recommended when PDR causes significant complications, such as persistent vitreous hemorrhage or tractional retinal detachment.

During the procedure, the surgeon removes some of the vitreous gel and may remove scar tissue or address retinal problems that are threatening vision.

Can Vision Improve After PDR Treatment?

Vision outcomes vary from person to person. Treatment may help stabilize vision and prevent additional damage, but it does not guarantee that lost vision will return.

If vision loss is caused by bleeding or another treatable complication, vision may improve after the underlying problem is treated. However, permanent damage to retinal tissue may result in lasting vision impairment.

Your retina specialist can evaluate the condition of your retina and explain what treatment may accomplish in your individual situation.

Can You Prevent Proliferative Diabetic Retinopathy From Getting Worse?

Although diabetes-related eye damage cannot always be prevented, managing diabetes and attending regular eye examinations can reduce the risk of serious vision complications.

Important steps include:

• Keep blood glucose levels within your recommended target range.
• Monitor and manage blood pressure.
• Manage cholesterol when recommended by your healthcare provider.
• Take prescribed diabetes medications as directed.
• Avoid smoking.
• Attend regular dilated eye examinations.
• Follow your retina specialist's recommended treatment schedule.
• Report sudden changes in vision promptly.

Good diabetes management is an important part of protecting your eyes, but it does not replace regular retinal examinations.

What Are the Warning Signs of Proliferative Diabetic Retinopathy?

PDR may develop without noticeable symptoms during its early stages. As the condition progresses, symptoms can include:

• New or increasing floaters
• Dark spots or shadows in your vision
• Blurred vision
• Difficulty seeing at night
• Sudden changes in vision
• Vision loss

Sudden increases in floaters, flashes of light, or a curtain-like shadow over your vision may indicate a serious retinal problem and require urgent evaluation.

When Should You See an Eye Specialist?

If you have diabetes, regular comprehensive eye examinations are important even when your vision seems normal. Diabetic retinal disease can progress before noticeable symptoms develop.

If you have already been diagnosed with proliferative diabetic retinopathy, follow-up appointments are especially important. Your eye specialist can monitor changes in the retina and determine whether treatment is needed or needs to be adjusted.

Protect Your Vision From Proliferative Diabetic Retinopathy

Proliferative diabetic retinopathy is a serious complication of diabetes, but timely diagnosis and treatment can significantly reduce the risk of severe vision loss. If you have diabetes or have noticed changes in your vision, a comprehensive retinal examination can help identify problems early.

If you have been diagnosed with PDR, work closely with your eye specialist and diabetes care team to manage the condition and protect your remaining vision.