Diabetes and Your Eyes: What You Need to Know

If you have diabetes, your eyes are at serious risk — even if your vision feels perfectly fine right now. Understanding the connection between blood sugar and eye health could save your sight.

How does diabetes affect your eyes?

High blood sugar levels damage the tiny blood vessels that supply your retina — the light-sensitive layer at the back of your eye. Over time, these vessels can swell, leak fluid, or even close off entirely. In advanced cases, fragile new blood vessels grow abnormally on the retina, threatening your vision.

This condition is known as diabetic retinopathy, and it can develop in anyone with type 1 or type 2 diabetes. The risk increases the longer someone has diabetes and the less controlled their blood sugar levels are.

Mild NPDR

Small areas of balloon-like swelling in blood vessels. Usually no symptoms.

Moderate NPDR

More vessels become blocked. Retina may begin to swell (macular edema).

Severe NPDR

Many blocked vessels, signaling the eye to grow new, weak blood vessels.

Treatment options

The earlier retinopathy is detected, the more likely treatment will be successful. Available treatments include.

Anti-VEGF injections

Medications injected into the eye to block abnormal vessel growth and reduce fluid leakage.

Laser surgery

Laser photocoagulation targets leaking vessels to prevent further damage and vision loss.

Corticosteroids

Anti-inflammatory drugs that help reduce swelling in the macula and stabilize vision.

Diabetes and Your Eyes: What You Need to Know

Diabetes and Your Eyes: What You Need to Know