Effects of Different Add Powers on the Comfort and Productivity of Computer Users With Fixed or Free Head Movement

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

36 participants

Study Classification

INTERVENTIONAL

Study Start Date

2005-05-31

Study Completion Date

2006-06-30

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

The aim of this study is to examine the relationship between optical blur from poor refractive corrections (glasses) of older workers using computers and their productivity and comfort in the workplace. The investigators believe that improving the visual status of subjects who use computers will have a beneficial effect on productivity and visual comfort.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

The aim of this study is to examine the relationship between optical blur from poor refractive corrections (glasses) of older workers using computers and their productivity and comfort in the workplace. We believe that improving the visual status of subjects who use computers will have a beneficial effect on productivity and visual comfort. All subjects will be required to complete a vision screening at no charge to decide if they qualify for the study. This is a double-blind study, which means that neither the subject nor the doctors will know which pair of lenses you will be wearing during the parts of the study. Subjects will complete a total of 4 hours of testing. The total amount of testing will be divided into ten 15-minute periods. During each period, the investigator will place different lenses in a trial frame. The trial frame that the subject will wear during the experiment will have their prescription for near plus an unknown pair of lenses. During the testing, the subject will complete a task involving finding and deleting apostrophes from a manuscript on a standard computer. Either the investigator or co-investigator will explain how to do this simple task. Subjects will answer a short survey before and after these tasks to check on symptoms resulting from using the computer. The following periodic measurements will be made during the study: productivity and accuracy to search for apostrophes (') in a document on one of the states of the U.S. These tasks will require a total of 4 hours testing with a total of ten pairs of trial lenses during a single visit.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Refractive Errors Asthenopia

Keywords

Explore important study keywords that can help with search, categorization, and topic discovery.

Refractive error Asthenopia

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

Spectacle Lenses

Intervention Type DEVICE

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* 40 years of age or greater
* 20/40 visual acuity or better in each eye
* Use a computer at least 1 hour per work day

Minimum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Kent M Daum, O.D., Ph.D.

Role: PRINCIPAL_INVESTIGATOR

School of Optometry, University of Alabama at Birmingham

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

School of Optometry

Birmingham, Alabama, United States

Site Status

Countries

Review the countries where the study has at least one active or historical site.

United States

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

X050314015

Identifier Type: -

Identifier Source: org_study_id