Abstract
The aim of this study was to determine the correlation between tear function tests and impression cytology results and the clinical findings in ocular rosacea. Patients with a histopathologic and clinical diagnosis of acne rosacea were studied. Ocular examination consisted of best-corrected visual acuity measurement, slitlamp examination, tear break-up time (BUT), basal Schirmer test, and rose Bengal staining. Impression cytology was done two days later. Ocular findings and symptoms were checked and scored. Age-matched controls were assessed using the same parameters. The most frequent symptoms were itching (80%), redness (68%), burning (64%), and photophobia (60%). The most frequent clinical findings were meibomitis (92%), telangiectasis (88%), blepharitis (84%), superficial punctate keratopathy (72%), and hyperemia (60%). Mean tear BUT was 9.6+/-3.1 (SD) seconds (range 5-17 seconds). Mean Schirmer test measured 11.4+/-1.6 mm (SD) (range 8-15 mm). Mean rose Bengal staining scored 1.8+/-0.1. Mean tear BUT, Schirmer test and rose Bengal staining scores were lower in the rosacea group than the control group (p<0.003, p=0.04, p< or =0.038, respectively). Staining was pathologic in 18 patients (36%) and the highest staining score was 4. No significant difference was found between the stages of the nasal and temporal conjunctival impression cytologies in each eye, and there was no relationship between impression cytology stages and rose Bengal scores (p>0.05). A significant relation was observed between the stages of impression cytology and the severity of meibomitis (Fisher's test, chi2=9.625, p=0.001). The Schirmer test gave lower results in patients with severe blepharitis (Mann-Whitney U Test, U=180.5, p=0.034). Early diagnosis prevents serious ocular complications and chronic dry eye in rosacea. We suggest that in addition to tear function tests, rose Bengal staining and impression cytology can be successfully used in the early diagnosis of dry eye and in monitoring medical treatment in ocular rosacea. Meibomian glands play an important role in the pathogenesis of the ocular disease.
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