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To compare levels of physical activity and sedentary time in a representative sample of US adolescents and adults with and without visual impairment.

Cross-sectional analyses were carried out using data from the National Health and Nutrition Examination Survey.

The study population consisted of 6001 participants (adolescents n=1766, adults n=4235). The present analysis aggregated data from 2003 to 2004 and 2005–2006.

Objective physical activity and sedentary behaviour assessment was conducted over 7 days. Distance visual acuity was measured for each eye in all participants 12 years and older. Participants’ vision was categorised as: normal vision, uncorrected refractive error, non-refractive visual impairment. We estimated the sex-specific linear associations between presenting vision and objectively measured physical activity and sedentary patterns using …