Prevalence and Sequelae of Computer Vision Syndrome in Egyptian Universities

Visual, Ocular Surface and Extraocular Diagnostic Criteria for Prevalence of Computer Vision Syndrome: A Cross-sectional Smart-survey Based Study

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT05187221

Enrollment

8085

Registered

2022-01-11

Start date

2021-12-30

Completion date

2022-09-01

Last updated

2024-05-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Computer Vision Syndrome

Brief summary

CVS-F4 questionnaire will be used as an instrument to survey CVS prevalence and severity among medical students

Detailed description

CVS-F4 (30 questions) will be an online survey via the SurveyMonkey Company. We will collect the responses and analyze the results. Informed consent will be obtained from the participants as an item within the survey itself that he/she agrees to use his/her data in this research work. The questionnaire includes questions regarding potential ocular, extra-ocular, musclo-skeletal and neuro-psychatric complains caused by CVS. Complete statistical analysis of the survey data will be done using univariate and multivariate logistic and linear regression analysis. The CVS diagnosis will be based on the 5 diagnostic criteria (5DC) to create a new short self-assessment questionnaire for accurate prevalence of CVS.

Interventions

BEHAVIORALCVS Group

CVS-F4 will be an online survey via the SurveyMonkey Company. The participants will report their potential CVS complains and associated screen factors as screen-time, screen-size, screen-resolution and other factors. We will collect the responses and analyse the results. Informed consent will be obtained from the participants as an item within the survey itself that he/she agrees to use his/her data in this research work. This group will contain participants with CVS complains.

Study design

Observational model

COHORT

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

16 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

* university students * university staff members

Exclusion criteria

* ocular surgery * amblyopia * anisometropia * strabismus * systemic disease

Design outcomes

Primary

Measure	Time frame	Description
Number of participants suffering from CVS	3 months	will be reported in form of percentage (%) of students with CVS
Rate of CVS symptoms-attacks	3 months	The results will be presented as annual percentage

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026