1. Greiner JV, Covington HI, Allansmith MR (1977) Surface morphology of the human upper tarsal conjunctiva. Am J Ophthalmol 83:892–905
2. Kessing SV (1968) Mucous gland system of the conjunctiva. A quantitative normal anatomical study. Acta Ophthalmol (Copenh) Suppl 95:91
3. Knop N, Knop E (2000) Conjunctiva-associated lymphoid tissue in the human eye. Invest Ophthalmol Vis Sci 41(6):1270–1279
4. Wei ZG, Cotsarelis G, Sun TT, Lavker RM (1995) Label-retaining cells are preferentially located in fornical epithelium: implications on conjunctival epithelial homeostasis. Invest Ophthalmol Vis Sci 36:236–246
5. Wei A, Hong J, Sun X, Xu J (2011) Evaluation of age-related changes in human palpebral conjunctiva and meibomian glands by in vivo confocal microscopy. Cornea 30(9):1007–1012