1. Lemp MA. Advances in understanding and managing dry eye disease. Am J Ophthalmol. 2008;146(3):350-356. doi: 10.1016/j.ajo.2008.05.016 [doi].

2. Gekka M, Miyata K, Nagai Y, et al. Corneal epithelial barrier function in diabetic patients. Cornea. 2004;23(1):35-37.

3. Zhang X, Zhao L, Deng S, Sun X, Wang N. Dry eye syndrome in patients with diabetes mellitus: Prevalence, etiology, and clinical characteristics. J Ophthalmol. 2016;2016:8201053. doi: 10.1155/2016/8201053 [doi].

4. Fuerst N, Langelier N, Massaro-Giordano M, et al. Tear osmolarity and dry eye symptoms in diabetics. Clin Ophthalmol. 2014;8:507-515. doi: 10.2147/OPTH.S51514 [doi].