Push-up amplitude of accommodation and target size.

@article{Rosenfield1995PushupAO,
  title={Push-up amplitude of accommodation and target size.},
  author={Mark Rosenfield and Anna Shelli Cohen},
  journal={Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians},
  year={1995},
  volume={15 3},
  pages={231-2}
}