AC	Classification accuracy
CAD	Computer-aided diagnosis
CLAHE	Contrast-limited adaptive histogram equalization
CNN	Convolutional neural network
DCNN	Dense convolutional neural network
DFTSA-Net	Deep feature transfer-based stacked autoencoder network
DME	Diabetic macular edema
DR	Diabetic retinopathy
FCM	Fuzzy C-means
GFS	Grand feature set
HE-CNN	Hierarchical ensemble CNN
IDRiD	Indian Diabetic Retinopathy Image Dataset
IRC	Intraretinal cystoid fluid
OCT	Optical coherence tomography
PCA	Principal component analysis
SCGA	Scaled conjugate gradient algorithm
SGM	Stochastic gradient descent with momentum
SN	Sensitivity
SP	Specificity
SVM	Support vector machine
WHO	World Health Organization