Hotelbuchung
Hotel Registration
Grußwort
Welcome address
Beteiligte Gesellschaften
Societies involved
DOG Information
DOG Information
Eröffnung des Kongresses
Opening Ceremony
Preise
Awards
Ablauf der Tagung 2003
General overview of congress
Lageplan der Räumlichkeiten
Map of Congress Center
Wissenschaftliche Themen
Scientific topics
Symposien
Symposia
Wissenschaftliches Programm
Scientific program
Posterpräsentationen
Poster Presentation
Kurse
Courses
Begleitende Veranstaltungen
Accompanying program
Arbeitssitzungen
Working sessions
Rahmenprogramm
Social program
Allgemeine Informationen
General Information
Autorenindex
Index of Authors
Industrieaussteller
Commercial exhibitors
Sponsoren
Sponsors
Impressum
DOG Homepage
Abstract
Abstract
Characteristics of Spontaneous Eyeblink Activity during Video Display Terminal Use in Patients with Dry Eye Syndrome
Schlote T., Kadner G., Freudenthaler N.
Universitäts-Augenklinik Tübingen
Purpose: To analyze the spontaneous eyeblink rate (SEBR) of patients with dry eye syndrome before and during video display terminal (VDT) use.
Method: The SEBR of 30 patients with dry eye syndrome (age 18 - 67 years) was measured by counting the absence of the corneal reflex using a computer-based video analysis system. Only complete eyeblinks were recorded within 10 minutes under three different conditions: during a conversation, during VDT use, and during VDT use after prolonged work for 30 min.
Results: In comparison to SEBR during conversation (mean 97.1/10min) the SEBR significantly decreased during VDT use (mean 43.4/10min) (p<0,001; Wilcoxon Signed Ranked test). Prolonged work at VDT was not associated with a further decrease of SEBR (mean 42.1/10 min). The SEBR was characterized by a marked interindividual variability ranging between 3 and 170 eyeblinks/10min during VDT use. No significant correlation between SEBR (neither during conversation nor during VDT use) and quality (break up time) and quantity (Schirmer-I test, Jones test) of the tear film could be detected.
Conclusions: VDT use is associated with a profound decrease of the SEBR in patients with dry eye syndrome. Marked interindividual differences in SEBR and no correlation between SEBR and ocular tear film parameters exist in dry eyes.