@article {Murphy2007,
	title = {How red is a white eye? Clinical grading of normal conjunctival hyperaemia},
	journal = {Eye},
	volume = {21},
	year = {2007},
	pages = {633-638},
	author = {Murphy, P.J. and Lau, J.S.C. and Sim, M.M.L. and Woods, R.L.}
}
