- Causes of DME
- 2 Types of DME
- DME Symptoms
- Treatment Options
The macula is an area located in the center of the retina that is responsible for visual sharpness. The retina is the light-sensitive tissue at the back inner wall of the eye. DME occurs when there is an excess accumulation of fluid in the macula of the eye.
What causes diabetic macular edema?
- This weakens the tiny blood vessels in the retina and causes leakage of fluids in and around the macula.
- The damaged blood vessels and micro-aneurysms (tiny bulges) begin to build up pressure that causes edema (swelling) in the macula part of the retina, leading to diabetic macular edema (DME).
DME is a serious eye complication that obstructs the function of the macula, distorting vision.
2 types of diabetic macular edema
The 2 types of diabetic macular edema (DME) include
- Focal DME: Small spots of fluid leakage occur due to irregularities in the blood vessels in the eye.
- Diffuse DME: Leaks and swelling occur throughout the macula due to swelling of the retinal capillaries. The eyesight of a person with diffuse DME may be seriously affected.
Risk factors for DME
DME progresses over time in people who have diabetes. Risk factors that can increase the risk of DME in people with diabetes include
What are the symptoms of diabetic macular edema?
Diabetic macular edema (DME) doesn’t always cause symptoms in the early stages. A person with diabetes should have their eyes examined every year to help identify any signs of retinopathy or DME.
Some of the common symptoms of DME include:
If the above symptoms appear, the person must see the doctor right away. Sometimes, symptoms may not be noticed if a person has DME in only one eye.
How is diabetic macular edema treated?
Treatment of diabetic macular edema (DME) aims at maintaining the vision of the patient and preventing future loss of vision.
When left untreated, within a few months, vision can significantly worsen, and eventually, blindness may occur.
One or more of the following treatments may be recommended by the doctor to treat DME:
- Laser treatment: Tiny lasers are used to target and seal the leaking blood vessels, preventing fluid from entering the macula. Several laser treatments may be required to repair eye damage. Laser treatment helps maintain current vision and prevent further loss of vision.
- Injectable medications: There are two types of injectable medications, namely, anti-vascular endothelial growth factor (anti-VEGF) injections and steroid injections. The ophthalmologist would decide on the specific medication and regularity of treatment that’s suitable for the patient.
- Anti-VEGF injections: Anti-VEGF medication is injected into the vitreous gel (the fluid in the center of the eye) using a short thin needle after applying numbing drops to the eye. Medications block the activity of VEGF and help stop leaking, stop the abnormal growth of the blood vessels, reduce swelling in the eye, and improve vision.
- Steroid injections: Sometimes, steroid injections may be used to help reduce swelling of the retina and improve vision if anti-VEGF medications are no longer effective. Steroid treatment may be provided as a single injection or implants that release the medication over time. However, because steroids may increase the risk of cataracts in some patients, the doctor will evaluate whether the benefit of using steroids outweighs the risk involved.
How can diabetic macular edema be prevented?
Taking the following measures can help prevent diabetic macular edema (DME) and protect the vision.
Preventive actions include:
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