NCT06518148

Brief Summary

Causes of Visual Impairment Among Patients Applying for the Visually Disability Certification in Upper Egypt: A Retrospective Study

Trial Health

55
Monitor

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
2,000

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Apr 2024

Geographic Reach
1 country

1 active site

Status
active not recruiting

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

Study Start

First participant enrolled

April 20, 2024

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

July 14, 2024

Completed
10 days until next milestone

First Posted

Study publicly available on registry

July 24, 2024

Completed
1.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 20, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 20, 2025

Completed
Last Updated

September 4, 2025

Status Verified

August 1, 2025

Enrollment Period

1.7 years

First QC Date

July 14, 2024

Last Update Submit

August 27, 2025

Conditions

Visual Impairment

Outcome Measures

Primary Outcomes (2)

  • The relative frequencies or prevalence of different eye diseases/conditions causing visual disability

    10 month

  • 2-Ranking of the leading cause(s) of visual impairment

    10 month

Interventions

1- uncorrected and best corrected visual acuity (UCVA and BCVA) by Snellen's-chart.2-slit lamp bio microscopy (Haag-Streit, USA).3-IOP measurements (Goldmann Applanation tonometer)DIAGNOSTIC_TEST

diagnostic test;UCVA, IOP, Electrophysiological study

Also known as: 3-fundus examination (+90D lens and indirect ophthalmoscope)., 4- Electrophysiological study visual evoked potential (VEP) and full filed electroretinogram (Metrovision machine).

Eligibility Criteria

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

All patients referred to The Ministry of Social Solidarity with visual Disability in upper Egypt who were examined in the visual disability screening program from 2020-2024-no age or gender limits for the study.

You may qualify if:

  • All patients referred to The Ministry of Social Solidarity with visual Disability in upper Egypt who were examined in the visual disability screening program from 2020-2024.

You may not qualify if:

  • The patients who had decreased vision but did not fit with the WHO definition of visual disability.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Assiut University

Asyut, 33033, Egypt

Location

MeSH Terms

Conditions

Vision Disorders

Interventions

Evoked Potentials, Visual

Condition Hierarchy (Ancestors)

Sensation DisordersNeurologic ManifestationsNervous System DiseasesEye DiseasesSigns and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Evoked PotentialsCortical ExcitabilityElectrophysiological PhenomenaPhysiological PhenomenaNervous System Physiological PhenomenaMusculoskeletal and Neural Physiological PhenomenaOcular Physiological Phenomena

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
RETROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Lecture of ophthalmology ,faculty of medicine , new valley university

Study Record Dates

First Submitted

July 14, 2024

First Posted

July 24, 2024

Study Start

April 20, 2024

Primary Completion

December 20, 2025

Study Completion

December 20, 2025

Last Updated

September 4, 2025

Record last verified: 2025-08

Locations

EG(1)