Smoking in pregnancy is associated with increased adiposity and retinal arteriolar wall-to-lumen ratio in adolescence: The Copenhagen Child Cohort Study 2000

•Adaptive optics allows for in vivo visualization of small resistance arterioles.•Adaptive optics imaging makes it possible to detect differences in retinal arteriolar wall-to-lumen ratios in adolescence.•Maternal smoking is related to a higher risk of obesity in the offspring.•Maternal smoking is related to a greater retinal arteriolar wall-to-lumen ratio in the female offspring.