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Characteristics for data by Framingham risk group. White bar, very low cardiovascular risk (< 5%); grey bar, low cardiovascular risk (5-9%); dotted bar, medium/high cardiovascular risk (≥ 10%); black lines, Standard deviation; IMT, intima-media thickness; OARI, ophthalmic artery resistance index. * p < 0.0001; **p < 0.01
