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Cystoid Macular Edema (CME)
Cystoid macular edema (CME) is a disorder affecting the retina, when there are multiple, fluid-filled, cyst-like structures in the macula (the area of the retina that is responsible for central vision). These cyst-like structures (cystoids) cause swelling, or edema, of the macula.

Symptoms of CME

  • Blurred or distorted central vision (most common)
  • Pink-tinted or dim vision
  • Sensitivity to light

Peripheral vision is not affected by CME. It is also possible for CME to be present when there has been no vision loss. Your doctor can determine whether you have CME or not during a medical eye exam.
 
Causes of CME

Although the exact cause of CME is still unknown, it can be linked to:
  • Retinal vein occlusion
  • Uveitis
  • Diabetes
  • Eye surgery
  • Eye trauma
  • Side effects from medication
 
Treatments available for CME

Treatments for CME vary depending on the cause. Some methods may include:
  • Anti-inflammatory medications, such as steroids
  • Vitrectomy surgery
  • Laser surgery
Photo of cystoid macular edema
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