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Flowchart. This flowchart depicts the exclusion algorithm. After exclusion of data based on image quality and ocular conditions, sample A consists of 11 124 eyes of 6471 subjects. To account for central confounders, we additionally excluded the following conditions: tumour, stroke, Parkinson’s disease, multiple sclerosis, epilepsy, depression and centrally acting drugs. This data set is labelled sample B, including 9226 eyes of 5347 subjects.
