OBJECTIVE To evaluate the validity and reliability of the Ocular Surface Disease Index (OSDI) questionnaire. METHODS Participants (109 patients with dry eye and 30 normal controls) completed the OSDI, the National Eye Institute Visual Functioning Questionnaire (NEI VFQ-25), the McMonnies Dry Eye Questionnaire, the Short Form-12 (SF-12) Health Status Questionnaire, and an ophthalmic examinatio...

OBJECTIVE The purpose of this report was to investigate the psychometric properties of the McMonnies questionnaire for dry eye disease. METHODS The instrument was administered to 75 patients with dry eye disease on two occasions. Additional dry eye clinical tests, patient-reported dry eye interviews, and the NEI-VFQ-25 were completed during these examinations. Reliability (internal consistenc...

The goal of the study was to assess the test-retest reliability of the Work Ability Index (WAI) questionnaire. Reliability was tested using a test-retest design with a 4 week interval between measurements. Valid data were collected among 97 elderly construction workers aged 40 years and older. We analysed the test-retest reliability of the WAI score itself (range 7-49 points) and classification...