NCT04405648

Brief Summary

CVS-F3 questionnaire will be used as an instrument to survey CVS prevalence and severity among medical students

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
49

participants targeted

Target at P25-P50 for all trials

Timeline
Completed

Started May 2020

Shorter than P25 for all trials

Geographic Reach
1 country

2 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

May 24, 2020

Completed
4 days until next milestone

First Posted

Study publicly available on registry

May 28, 2020

Completed
Same day until next milestone

Study Start

First participant enrolled

May 28, 2020

Completed
5 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 20, 2020

Completed
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2020

Completed
Last Updated

December 22, 2022

Status Verified

December 1, 2022

Enrollment Period

5 months

First QC Date

May 24, 2020

Last Update Submit

December 21, 2022

Conditions

Computer Vision Syndrome

Outcome Measures

Primary Outcomes (6)

  • Prevalence of CVS

    will be reorted in form of percentage (%) of students with CVS

    1 month

  • Visual acuity

    measurement of visual acuity using distance visual charts in logMAR measurements

    1 month

  • Refraction

    measurement of refractive power in diopters

    1 month

  • Schirmer test

    measurement of tear volume production with Schirmer test in mm unit measurements

    1 month

  • Tear Break Up Time (TBUT)

    measurement of tear film stability with TBUT in seconds time unit measurements

    1 month

  • mfERG examinations

    mfERG will be performed for the students to document the effect of CVS on retina

    6 months

Interventions

CVS GROUPBEHAVIORAL

the students will respond to CVS-F3 questionnaire to report their potential CVS complains and associated screen factors as screen-time, screen-size, screen-resolution and other factors.

Eligibility Criteria

Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study Population

medical students who are using screens in their medical studies or personal lives and how these screens affect their medical studies and the effect of mandated medical computer use if present on their screen-behaviour and associated risk factor

You may qualify if:

  • university students
  • studying medicine

You may not qualify if:

  • ocular surgery
  • amblyopia
  • anisometropia
  • strabismus
  • hypertension

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

Faculty of medicine

Sohag, 82425, Egypt

Location

Sohag Faculty of Medicine

Sohag, 82425, Egypt

Location

Related Publications (1)

  • Iqbal M, Soliman A, Ibrahim O, Gad A. Analysis of the Outcomes of the Screen-Time Reduction in Computer Vision Syndrome: A Cohort Comparative Study. Clin Ophthalmol. 2023 Jan 7;17:123-134. doi: 10.2147/OPTH.S399044. eCollection 2023.

    PMID: 36644605DERIVED

Study Officials

  • Mohammed Iqbal

    Sohag University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
CROSS SECTIONAL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant Professor of Ophthalmology

Study Record Dates

First Submitted

May 24, 2020

First Posted

May 28, 2020

Study Start

May 28, 2020

Primary Completion

October 20, 2020

Study Completion

December 31, 2020

Last Updated

December 22, 2022

Record last verified: 2022-12

Locations

EG(2)