NCT00317525

Brief Summary

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.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
36

participants targeted

Target at below P25 for phase_3

Timeline
Completed

Started May 2005

Shorter than P25 for phase_3

Geographic Reach
1 country

1 active site

Status
completed

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

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 1, 2005

Completed
12 months until next milestone

First Submitted

Initial submission to the registry

April 21, 2006

Completed
4 days until next milestone

First Posted

Study publicly available on registry

April 25, 2006

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

June 1, 2006

Completed
Last Updated

September 11, 2006

Status Verified

May 1, 2005

First QC Date

April 21, 2006

Last Update Submit

September 7, 2006

Conditions

Refractive ErrorsAsthenopia

Keywords

Refractive errorAsthenopia

Outcome Measures

Primary Outcomes (2)

  • Visual comfort

  • Productivity (correct words per hour)

Interventions

Spectacle LensesDEVICE

Eligibility Criteria

Age40 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

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

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

School of Optometry

Birmingham, Alabama, 35294-0010, United States

Location

MeSH Terms

Conditions

Refractive ErrorsAsthenopia

Condition Hierarchy (Ancestors)

Eye Diseases

Study Officials

  • Kent M Daum, O.D., Ph.D.

    School of Optometry, University of Alabama at Birmingham

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
DOUBLE
Purpose
TREATMENT
Intervention Model
FACTORIAL
Sponsor Type
OTHER

Study Record Dates

First Submitted

April 21, 2006

First Posted

April 25, 2006

Study Start

May 1, 2005

Study Completion

June 1, 2006

Last Updated

September 11, 2006

Record last verified: 2005-05

Locations

US(1)