title: Adaptation of the tear film to work in air-conditioned rooms (office-eye syndrome).
abstract: To detect mechanisms of tear-film adaptation to a dry climate, we investigated co-workers in our hospital with air-conditioned rooms. Three groups were formed according to the time of occupancy (6 months to 2 years, 2-4 years, and 4-6 years) and were compared with a control group. The number of patients with frequent dry-eye complaints increased up to 48%, reaching a steady state after 2-4 years. The breakup time was slightly reduced (decrease, 17.5%; P < 0.01) and also reached a steady state after 2-4 years. The tear-ferning test, however, showed a highly significant improvement (P < 0.01). A slight reduction in the Schirmer test was found. Our study indicates that improved tear quality is important for adaptation to long-standing increased evaporation of the tear film.
authors.affiliation: Augenklinik der RWTH Aachen, Germany.
authors.forename: H J
authors.initials: HJ
authors.lastname: Sommer
authors.forename: J
authors.initials: J
authors.lastname: Johnen
authors.forename: P
authors.initials: P
authors.lastname: Schöngen
authors.forename: H H
authors.initials: HH
authors.lastname: Stolze
mesh_terms: D000221:Adaptation, Ocular / Q000502:physiology*; D000389:Air Conditioning; D015352:Dry Eye Syndromes / Q000503:physiopathology*; D006281:Health Occupations; D006761:Hospitals; D006801:Humans; D006813:Humidity; D016273:Occupational Exposure; D013666:Tears / Q000502:physiology*