1. Contact lens staining due to sulphasalazine;Riley, S.A.; Flegg, P.J.; Mandal, B.K.;Lancet,1986
2. Topical medications. Int Ophalmol Clin;Krezanoski, J.Z.,1981
3. Adrenochrome pigmentation of hydrophilic lenses;Sugar, J.;Arch Ophihalmol,1974
4. Adrenochrome staining of soft contact lenses;Miller, D.; Brooks, S.M.; Mobilia, E.;Ann Ophihalmol,1976
5. Lack of hydrophilic lens discoloration in patients using dipvalyl epinephrine for glaucoma;Newton, M.J.; Nesburn, A.B.;Am Ophihalmol,1979