Table 3—

International Clinical Diabetic Macular Edema Disease Severity Scale (ref. 63)

Proposed disease severity levelFindings observable upon dilated ophthalmoscopy*
DME apparently absentNo apparent retinal thickening or hard exudates in posterior pole
DME apparently presentSome apparent retinal thickening or hard exudates in posterior pole
DME presentMild DME (some retinal thickening or hard exudates in posterior pole but distant from the center of the macula)
Moderate DME (retinal thickening or hard exudates approaching the center of the macula but not involving the center)
Severe DME (retinal thickening or hard exudates involving the center of the macula)
  • *

    * Hard exudates are a sign of current or previous macular edema. DME is defined as retinal thickening requiring a three-dimensional assessment that is best performed by a dilated examination using slit-lamp biomicroscopy and/or stereo fundus photography.