@article {schulze2008use,
	title = {The use of fractal analysis and photometry to estimate the accuracy of bulbar redness grading scales},
	journal = {Investigative ophthalmology \& visual science},
	volume = {49},
	year = {2008},
	pages = {1398{\textendash}1406},
	publisher = {ARVO},
	author = {Schulze, Marc M and Hutchings, Natalie and Simpson, Trefford L}
}
