Table 2

Features of false-negative and false-positive images for referable DR in the internal validation data set

FeaturesNo.Proportion
False-negative images
 IRMA3477.3
 PRP laser scar49.1
 Blurred preretinal hemorrhage36.8
 Questionable new vessels36.8
 Total44100
False-positive images
 Retinal disorders
  Background DR48285.6
  AMD101.8
  Myopic maculopathy71.2
  Silicone oil–filled eyes50.9
  Retinal vessel occlusion20.4
  Retinal detachment20.4
  Others91.5
  Subtotal51791.8
 Normal fundus
  With artifacts213.8
  Without artifacts254.4
  Subtotal468.2
  Total563100
  • AMD, age-related macular degeneration; IRMA, intraretinal microvascular abnormality; PRP, peripheral retinal photocoagulation.