Correlation Between Sleep Quality and Tear Film Tests

Article Info Correlation Between Sleep Quality and Tear Film Tests Peyman Ahmadi1, Ali Mirzajani2*, Ebrahim Jafarzadehpur3, Jamileh Abolghasemi4 1. MSc Student of Optometry, Department of Optometry, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran 2. Associate Professor of Optometry, Department of Optometry, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran 3. Professor of Optometry and Vision Sciences, Department of Optometry, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran 4. Associate Professor of Biostatistics, Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran Background and Objectives: Several studies have investigated the correlation between sleep and tear film among adults, senior high school students, employees and animals. The aim of this study is to evaluate the correlation between sleep quality and tear film tests among university students. Materials and Methods: A total of 102 students (52 men and 50 women) were enrolled in this cross-sectional study. Their sleep quality was evaluated using the Pittsburgh standard questionnaire and their tear film by the Schirmer-1 test and the tear film break up time (TBUT). Results: Out of 102 participants in this study, 69(67.6%) students had poor sleep quality and 64 (62.7%) students based on TBUT and 17(16.7%) students based on Schirmer-1 test had dry eye. There was a significant relationship between the Pittsburgh Sleep Quality Index (PSQI) and the Schirmer-1 test (correlation coefficient:-0.409, P<0.001). There was also a significant relationship between PSQI and TBUT (correlation coefficient:-0.484, P<0.001). Conclusion: The results of this study showed that there is a significant correlation between PSQI and tear film tests.