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Kathleen S. Kunert; Ann S. Tisdale; Ilene K. Gipson

Arch Ophthalmol. 2002;120:330-337.

Objectives  To compare conjunctival goblet cell numbers as well as epithelial turnover in patients with non–Sjögren syndrome–associated keratoconjunctivitis sicca (NSS-KCS) and those with SS-KCS before and after 6 months of treatment with topical cyclosporine A (CsA) ophthalmic emulsion.

Methods  Conjunctival biopsy specimens from 16 patients with NSS-KCS and 12 with SS-KCS were obtained at baseline and after 6 months' therapy with CsA or vehicle alone. Conjunctival biopsy specimens were also obtained from 11 normal subjects. Periodic acid–Schiff staining determined the number of goblet cells present. Immunofluorescence microscopy for Ki-67 localization was used to evaluate the number of actively cycling cells.

Results  Periodic acid–Schiff staining showed fewer goblet cells at baseline in both dry eye populations when compared with normal subjects (P<.001). After 6 months of CsA treatment, conjunctival biopsy specimens of both NSS-KCS and SS-KCS groups revealed an increase in goblet cells compared with baseline (P<.05). More Ki-67–positive cells were observed in NSS-KCS conjunctiva at baseline than in normal conjunctiva (P<.05) whereas numbers of these cells in SS-KCS conjunctiva were similar to normal at baseline. After 6 months of CsA treatment, conjunctival biopsy specimens of NSS-KCS revealed a decrease in Ki-67–labeled cells compared with baseline (P<.001). In contrast, no substantial change was observed for CsA treatment in patients with SS-KCS.

Conclusions  Treatment of dry eye syndrome for 6 months with topical CsA resulted in an increase in goblet cell numbers in patients with NSS-KCS and SS-KCS and a decrease in epithelial turnover in those with NSS-KCS. Reducing ocular surface inflammation might have an effect on the proliferative activity of the epithelium.

From the Schepens Eye Research Institute and Department of Ophthalmology, Harvard Medical School, Boston, Mass.

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