Causes of Visual Impairment Among Patients Applying for the Visually Disability Certification

August 27, 2025 updated by: Asmaa Kamel Ahmed Hassan, New Valley University

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

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

Study Overview

Detailed Description

There are at least 2.2 billion individuals with near- or far-sightedness worldwide. Nearly half of these cases-at At least 1 billion-have untreated vision impairment that may have been avoided. The leading cause of blindness or impaired distant vision among these 1 billion people is diabetic retinopathy (3.9 million), age-related macular degeneration (8 million), cataracts (94 million), refractive error (88.4 million), and glaucoma (7.7 million). Presbyopia (826 million) is the primary ailment that impairs close vision.

According to estimates, there are four times as many cases of distant vision impairment in low- and middle-income areas as there are in high-income areas.

Aging populations and population expansion are predicted to raise the likelihood that more people may have visual impairment. Early on, irreversible severe visual impairment in young children can lead to delayed motor, verbal, emotional, social, and cognitive development, which can have long-term effects. Children of school age who are visually impaired may also perform less academically. The quality of life is significantly impacted by vision impairment in adult populations. Adults who are visually impaired may have greater rates of anxiety and depression as well as decreased employment rates.

Vision impairment in older persons can increase their risk of falling and breaking bones, walking difficulties, social isolation, and early admission into nursing homes or other care facilities.

According to estimates, vision impairment costs the world's economy $411 billion annually in lost productivity (purchasing power parity) . This amount is greatly above the predicted $25 billion cost gap incurred from treating vision impairment.

This study is to demonstrate the causes of visual impairment in upper Egypt among the different age groups and evaluate the possibility of preventing these disorders

Study Type

Observational

Enrollment (Actual)

2000

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Asyut, Egypt, 33033
        • Assiut University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-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.

Description

Inclusion Criteria:

  • 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.

Exclusion Criteria:

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

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
The relative frequencies or prevalence of different eye diseases/conditions causing visual disability
Time Frame: 10 month
10 month
2-Ranking of the leading cause(s) of visual impairment
Time Frame: 10 month
10 month

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

April 20, 2024

Primary Completion (Estimated)

December 20, 2025

Study Completion (Estimated)

December 20, 2025

Study Registration Dates

First Submitted

July 14, 2024

First Submitted That Met QC Criteria

July 23, 2024

First Posted (Actual)

July 24, 2024

Study Record Updates

Last Update Posted (Estimated)

September 4, 2025

Last Update Submitted That Met QC Criteria

August 27, 2025

Last Verified

August 1, 2025

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

IPD Plan Description

we share in a multicenter study.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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