@article {schulze2011grading,
	title = {Grading Bulbar Redness Using Cross-Calibrated Clinical Grading Scales},
	journal = {Investigative ophthalmology \& visual science},
	volume = {52},
	year = {2011},
	pages = {5812{\textendash}5817},
	publisher = {ARVO},
	author = {Schulze, Marc M and Hutchings, Natalie and Simpson, Trefford L}
}
