@article {Murphy2009,
	title = {Bifocals and Down{\textquoteright}s syndrome: Correction or treatment?},
	journal = {Ophthalmic and Physiological Optics},
	volume = {29},
	year = {2009},
	pages = {416-421},
	author = {Al-Bagdady, M. and Stewart, R.E. and Watts, P. and Murphy, P.J. and Woodhouse, J.M.}
}
