Diabetic retinopathy (DR) is the result of a complication of diabetes affecting the
retina. It can cause blindness, if left undiagnosed and untreated. An ophthalmologist
performs the diagnosis by screening each patient and analyzing the retinal lesions
via ocular imaging. In practice, such analysis is time-consuming and cumbersome to
perform. This paper presents a model for automatic DR classification on eye fundus
images. The approach identifies the main ocular lesions related to DR and subsequently
diagnoses the illness. The proposed method follows the same workflow as the clinicians,
providing information that can be interpreted clinically to support the prediction.
A subset of the kaggle EyePACS and the Messidor-2 datasets, labeled with ocular lesions,
is made publicly available. The kaggle EyePACS subset is used as training set and
the Messidor-2 as a test set for lesions and DR classification models. For DR diagnosis,
our model has an area-under-the-curve, sensitivity, and specificity of 0.948, 0.886,
and 0.875, respectively, which competes with state-of-the-art approaches.
