Bin Wang, Kenneth J. Ciuffreda: Depth-of-focus of the human eye in the near retinal periphery, Vision Research, 44, pp.1115-1125 (2004)
Colleen MacLachlan and Howard C. Howland: "Normal values and standard deviations for pupil diameter and interpupillary distance in subjects aged 1 month to 19 years", Ophthal. Physiol. Opt. Vol.22, No.3, pp.175-182 (2002)