The Italian Version of the Computer-Vision Symptom Scale Questionnaire: Translation, Validation and Reliability.

Not Applicable

Completed

• Conditions: Video Display Terminal Workers; Computer Vision Syndrome
• Interventions: Diagnostic Test: computer vision symptom scale (CVSS) questionnaire

• Registration Number: NCT05151302
• Lead Sponsor: Fondazione IRCCS Policlinico San Matteo di Pavia

Brief Summary

Video display terminal users frequently refer computer-related visual and ocular symptoms, that are the most frequently occurring health problems among such these subjects.

The Italian law has established an eye examination to assess ocular status (D.Lgs 81/08 ex law 626/96) in VDT workers: subjects are evaluated by clinical signs and symptoms. The availability of a validated questionnaire could be very useful to diagnose visual disturbances and to follow them during follow-up examinations in 2014, a Spanish group has developed and validated a questionnaire for the assessment of visual and ocular symptoms in VDT workers.

Aim of the present study is to make available to Italian health professionals a new instrument to assess asthenopic symptoms, taking into account the patient's perspective.

Detailed Description

Not available

Study Timeline

• Study Start: 2015-02-11
• Primary Completion: 2017-02-06
• Study Completion: 2017-02-06
• Study First Submitted: 2021-11-11
• Study First Submitted QC: 2021-11-25
• Study First Posted: 2021-12-09
• Status Verified: 2022-03
• Last Update Submitted: 2025-04-29
• Last Update Posted: 2025-05-01

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 216

Inclusion Criteria

• VDT workers as defined by the Italian law (>20 hours a week on PC); in the control group patients no VDT workers.
• VDT workers at the Foundation or VDT accessing to the general service of the Clinic for a routine visit (VDT group)
• patients, not working at VDT, accessing to the "general service" of the eye clinic to perform a routine visit will be asked to participate the study (control group)
• no ocular surgery in the preceding 6 months
• written consent to participate to study procedures and personal data utilization in an encoded form

Exclusion Criteria

• ocular surgery in the preceding 6 months
• patients unable to respond to questionnaire

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
completion of the computer vision symptom scale questionnaire, italian version	computer vision symptom scale (CVSS) questionnaire	video display terminal (VDT) workers completed the questionnaire

Primary Outcome Measures

Name	Time	Method
To assess reliability (Cronbach alpha) of the CVSS	one year	Cronbach alpha

Secondary Outcome Measures

Name	Time	Method
To assess: -item internal consistency -equality of item-scale correlations -item discriminant validity -temporal stability -discriminating ability (between VDT and non-VDT workers) -external validity	one year	statistical examinations