Comparing Visual Acuity Measurements (How Well You Can See) Using a Standard ETDRS Chart & a Handheld ETDRS Chart

Comparing visual acuity measurements (measurements of how well you can see) using a standard ETDRS (Early Treatment Diabetic Retinopathy Study) chart and a handheld ETDRS chart

Completed

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Key information

Conditions

Diabetic Retinopathy Cardiovascular Diseases Diabetes Complications Diabetes Mellitus Diabetic Angiopathies Endocrine System Diseases Eye Diseases Retinal Diseases Vascular Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Mid Atlantic Retina- Wills Eye Institute

Philadelphia, Pennsylvania, 19107, United States

About this study

Prospective determination of agreement between standard ETDRS chart and handheld illuminated ETDRS equivalent chart in eyes with retinal pathology

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Ability to provide written informed consent and comply with study assessments for the full duration of the study (one visit per patient).
Age greater than 18 years.
Clinical diagnosis of retinal disease (including age-related macular degeneration, macular degeneration, retinal vessel occlusion, among others).

Exclusion criteria

Presence of a significant cataract as determined by your doctor.
Presence of a significant posterior capsular opacity (haziness in your eyes) as determined by your doctor.
Diagnosis of uveitis (inflammation in part of the eye).

Treatment and study plan

Primary outcomes

ETDRS Letter Score

Time frame: 1 Day

To determine the visual acuity measurement using this handheld internally illuminated ETDRS chart, and a standard back illuminated EDTRS chart. This will be done during the visual acuity test.

Secondary outcomes

ETDRS Letter Score Consistency

Time frame: 1 Day

To use the score results to determine whether this new, handheld chart, called the RAM-ETDRS chart, is just as efficient as the standard ETDRS eye chart in measuring your vision. This will be done during your visual acuity exam.

Sponsors and collaborators

Lead sponsor

Julia Haller

Other

Registry information

Official study title

Prospective Determination of Agreement Between Standard ETDRS (Early Treatment Diabetic Retinopathy Study) Chart and Handheld Illuminated ETDRS Equivalent Chart in Eyes With Retinal Pathology

Important dates

Study start: 2012
Primary completion: 2013
Study completion: 2014
First posted: Jun 19, 2012
Registry last updated: Nov 10, 2016

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed