Factual investigation on Near Visual Function of Office Workers

JRCT ID: jRCT1030240025

Registered date:12/04/2024

Basic Information

• Recruitment status: Recruiting
• Health condition(s) or Problem(s) studied: Healthy individuals / presbyopia
• Date of first enrollment: 12/04/2024
• Target sample size: 700
• Study type: Observational

Outcome(s)

• Primary Outcome: Near function visual acuity

Secondary Outcome

-Presenteeism (QQ method)
-Changes over time in fatigue status in VDT work (subjective symptom survey)
-VDT work time
-The Near Activity Visual Questionnaire (NAVQ)

Key inclusion & exclusion criteria

• Age minimum: >= 20age old
• Age maximum: Not applicable
• Gender: Both

Include criteria

1. Men and women over 20 years old
2. Office workers who mainly perform VDT work
3. iPhone users (supported devices: iPhone X or later with TrueDepth camera, iOS 16 or later)

Exclude criteria

1. Those who had severe visual impairment
2. Those who cannot operate a smartphone

Related Information

• Primary Sponsor: Negishi Kazuno