Fig. 4. Three types of normal tarsal conjunctiva. The top row represents a conjunctiva with a smooth appearance, the middle row represents a conjunctiva with uniform papillary appearance, and the bottom row represents a conjunctiva with a nonuniform papillary appearance. The left column is a tarsal conjunctiva photographed with white light, the center column is a tarsal conjunctiva photographed with fluorescein dye and blue light, and the right column is a representation. (Reprinted from Greiner JV, Covington HI, Allansmith MR: Surface morphology of the human upper tarsal conjunctiva. Am J Ophthalmol 83:892–905, 1977.)