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Early diagnosis of ocular diseases is key to prevent severe vision damage and other healthcare-related issues. Color fundus photography is a commonly utilized screening tool. However, due to the small symptoms present for early-stage ocular diseases, it is difficult to accurately diagnose the fundus photographs. To this end, we propose an attention-based unilateral and bilateral feature weighting and fusion network (AUB-Net) to automatically classify patients into the corresponding disease categories. Specifically, AUBNet is composed of a feature extraction module (FEM), a feature fusion module (FFM), and a classification module (CFM). The FEM extracts two feature vectors from the bilateral fundus photographs of a patient independently. With the FFM, two levels of feature weighting and fusion are proceeded to prepare the feature representations of bilateral eyes. Finally, multi-label classifications are conducted …