Reading Performance With a Video Magnifier

The Effect of Video Camera Magnifier Use on Reading

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01670643

Enrollment

120

Registered

2012-08-22

Start date

2010-01-31

Completion date

2011-02-28

Last updated

2017-03-27

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

Conditions

Macular Degeneration

Keywords

AMD, vision rehabilitation, video camera magnifier, IVI, DASS

Brief summary

The most common goal for patients with vision loss who present for vision rehabilitation is to be able to read. The video magnifier (a device which combines a video camera and a screen to view the print being magnified) is the device which most often allows low-vision individuals to read successfully for extended periods of time. Previous studies on the outcomes of vision rehabilitation have not identified which components of the vision rehabilitation are effective. The hypothesis of this project is that providing a video camera magnifier, with basic training in operating the device, will allow patients to enhance both objective reading ability and subjective report of reading competence.

Detailed description

Patients will be given a video magnifier at initial consultation or at the end of vision rehabilitation

Interventions

BEHAVIORALVideo camera magnifier

reading with video camera magnifier

Study design

Observational model

CASE_CROSSOVER

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

40 Years to 90 Years

Healthy volunteers

Yes

Inclusion criteria

* Central field loss and decreased visual acuity in the better seeing eye (\<20/40 & \>20/400). * New patient at MEEI Low Vision Rehabilitation Clinic

Exclusion criteria

* Dementia (Mini-Mental State Examination) * Clinical depression (Geriatric Depression Scale) * Patients who previously received vision rehabilitation * Patients who have previously owned a desktop video magnifier

Design outcomes

Primary

Measure	Time frame	Description
Change in objective reading performance	baseline and one month	The subject undergoes testing to determine the change in reading performance on an objective scale.

Secondary

Measure	Time frame	Description
Change in subjective reading performance	baseline and one month	The subject is asked to describe subjectively how they feel their ability to read has either improved or decreased since using the reader.

Countries

United States

Outcome results

None listed

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