1. Rieger, G., 1992. The importance of the precorneal tear film for the quality of optical imaging. British journal of ophthalmology, 76(3), pp.157-158.
2. Tomlinson, A. and Khanal, S., 2005. Assessment of tear film dynamics: quantification approach. The ocular surface, 3(2), pp.81-95.
3. Lemp, M.A., Baudouin, C., Baum, J., Dogru, M., Foulks, G.N., Kinoshita, S., Laibson, P., McCulley, J., Murube, J., Pflugfelder, S.C. and Rolando, M., 2007. The definition and classification of dry eye disease: report of the Definition and Classification Subcommittee of the International Dry Eye WorkShop (2007). Ocular Surface, 5(2), pp.75-92.
4. Norn, M.S., 1969. Desiccation of the precorneal film. Acta ophthalmologica, 47(4), pp.865-880.
5. Korb, D.R., 2000. Survey of preferred tests for diagnosis of the tear film and dry eye. Cornea, 19(4), pp.483-486.