Measurement of Ocular Surface Irritation on a Linear Interval Scale with the Ocular Comfort Index

• Published in: Investigative ophthalmology & visual science Vol. 48; no. 10; pp. 4451 - 4458
• Main Authors: Johnson, Michael E, Murphy, Paul J
• Format: Journal Article
• Language: English
• Published: Rockville, MD ARVO 01.10.2007; Association for Research in Vision and Ophtalmology
• Subjects: Adolescent; Adult; Aged; Asthenopia - diagnosis; Biological and medical sciences; Dry Eye Syndromes - diagnosis; Eye and associated structures. Visual pathways and centers. Vision; Female; Fundamental and applied biological sciences. Psychology; Humans; Male; Middle Aged; Pain - diagnosis; Psychometrics; Reproducibility of Results; Sickness Impact Profile; Surveys and Questionnaires; Vertebrates: nervous system and sense organs; Measurement; Eye; Ocular; Comfort; Ophthalmology; Irritation; Surface

To examine the psychometric properties of the Ocular Comfort Index (OCI), a new instrument that measures ocular surface irritation designed with Rasch analysis to produce estimates on a linear interval scale. The OCI was self-completed by 452 subjects. Some of them repeated the questionnaire, to aid...