DiRekTS is a MATLAB GUI tool that classifies fundus images in whether it presents diabetic retinopathy or is healthy. The algorithm was developed implementing the pret-CNN and k-Top Scoring Pairs and Support Vector Machine, for AlexNet extracted-features. The Software allows loading a fundus image, which is displayed on the main panel which is the processed by the AlexNet and by both classification layers providing the positive class posterior probabilities given the SVM and the graphical representation of kTSP appears on screen, with the positive/negative rule ratio. An example fundus image is included in the zip.