1. N.J. van Haeringen and L. Thoring, Enzymatic composition of tears, “The Preocular Tear Film,” F.J. Holly ed., Dry Eye Inst., Lubbock, Texas. (1986).
2. R.J. Fullard, L.G. Carney, and T. Hum, Enzymes of carbohydrate metabolism in human tear fluid, “The Preocular Tear Film,” F.J. Holly ed., Dry Eye Inst., Lubbock, Texas. (1986).
3. T. Tsubai, H. Malsukawa, et al. Reformation of tear film and role of blinking, 1st Report, Mechanism of Mucin-coating over the corneal surface, J. Jap. C. L. Soc. 30:237 (1988).
4. T. Tsubai, N. Sakatani, J.M. Tiffany, et al., Relationship between tear film and blinking, 2nd Report, Protective function and elimination of superficial oily layer, J. Jap. C. L. Soc. 32:199 (1990).
5. R.J. Fullard and L.G. Carney, Human tear enzyme changes as indicators of the corneal response to anterior hypoxia, Acta Ophthalmol. 63:687 (1985).