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Common Data Element:  NIH Toolbox Sensation Domain Vision Measure Visual Acuity Test - Log minimum angle of resolution (MAR) score

Listed below are the details for the data element.

1.0
Element Type
Common Data Element
NIH Toolbox Sensation Domain Vision Measure Visual Acuity Test - Log minimum angle of resolution (MAR) score
NIHTBVALogMARScore
Short Description
Score for log of minimum angle of resolution (MAR), as part of the NIH Toolbox Sensation Domain Vision Measure Visual Acuity Test
Definition
Score for log of minimum angle of resolution (MAR), as part of the NIH Toolbox Sensation Domain Vision Measure Visual Acuity Test
 

Biomedical Terminologies and Standards

Notes
The NIH Toolbox Visual Acuity Test directly measures participants visual acuity, or distance vision. The participant is seated 12.5 feet away from a computer monitor at eye level, and letters (called optotypes) are displayed one at a time on the screen for the participant to identify, using both eyes at the same time, with the participant wearing his/her normal corrective lenses for distance vision (glasses or contact lenses, if worn). As the participant successfully identifies optotypes of a given size, smaller ones appear on the screen, until the computer program ascertains the smallest-size optotype the participant can successfully see. Conversely, the program displays larger optotypes if the participant cannot see the letter size that is first displayed, until a size that he/she can accurately see is found. For participants ages 3 to 7 only the letters H, O, T, and V are used, and children may point to a laminated card showing the letters if they cannot verbalize or cannot recall the letter names. For participants ages 8 and above, the entire set of optotypes is used, following a common protocol used in professional vision testing. This test takes approximately three minutes to administer and is recommended for ages 3-85.
Creation Date
2016-06-03
Historical Notes
References
Copyright 2006-2012 National Institutes of Health and Northwestern University. http://www.nihtoolbox.org/WhatAndWhy/Sensation/Vision/Pages/NIH-Toolbox-Visual-Acuity-Test-.aspx

Data Type
Numeric Values
Input Restrictions
Free-Form Entry
Minimum Value
-0.3
Maximum Value
1.7
External Schema Permissible Value Mapping
Population
Adult and Pediatric
Guidelines/Instructions
LogMAR Score (range from -0.3 (best possible score) to 1.7 (worst possible score))
Preferred Question Text
Category Groups and Classifications
DiseaseDomainSub-Domain
Traumatic Brain Injury Outcomes and End Points Physical Function
General (For all diseases) Assessments and Examinations Physical/Neurological Examination

Classification

Epidemiology :
Supplemental
Acute Hospitalized :
Supplemental
General (For all diseases) :
Supplemental
Moderate/Severe TBI: Rehabilitation :
Supplemental
Concussion/Mild TBI :
Supplemental
Keywords
Visual_Acuity_Test , Vision , NIH_Toolbox , Sensation
Labels
Effective Date
Until Date
Last Change Date
Tue May 08 14:59:00 EDT 2018
See Also
NIH Toolbox Dynamic Visual Acuity Test
Submitting Organization Name
NIH/CIT/BRICS
Submitting Contact Name
Malaika Schwartz
Submitting Contact Information
mschwartz@sapient.com
Steward Organization Name
NIH/CIT/BRICS
Steward Contact Name
Olga Vovk
Steward Contact Information
olga.vovk@nih.gov
NINDS ID

Change History