[Conjunctival impression in the keratoconjunctivitis sicca syndrome].

Cytological study is extremely useful in supplementing clinical findings in various conjunctival and corneal conditions. The authors describe a simple, reproducible, and painless method - impression cytology - for removing conjunctival tissue. It is cheap and quick, and can also be used for outpatients. The sample is spread flat on a light microscope slide and cytologically evaluated, e.g., with regard to perilimbal distribution of the mucus cells, cell nucleus-cytoplasm ratio and serpiginous aspect of the chromatin. The method permits more objective evaluation than is possible with conventional biopsy methods. It is particularly suitable in dry-eye syndrome and hypersecretion of the mucus cells. By repeating the procedure information can be obtained about the course of the disease and the efficacy of therapy.