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Essential Measures are only those items that are critical to the collection of the Measure or are necessary for the interpretation of results. Essential Measures are integral to the Measure. Without such information the data collected would be incomplete and/or misleading.
An additional PhenX Measure that the user may find helpful based on the selection of a particular PhenX Measure. Related PhenX Measures can include additional Measures that are needed to calculate a Derived Variable (e.g., Weight and Height are needed to calculate BMI), Measures that are commonly used in presentations and publications to present the value of the chosen Measures (e.g., Height and Weight by Race and Ethnicity), Measures that are conceptually related to the chosen Measure (e.g., Current Educational Attainment is conceptually related to Annual Family Income and Arm Span is conceptually related to Height), Measures that are physiologically and/or biologically related to the chosen Measure (e.g., Stroke and Heart Disease). Related PhenX Measures are suggestions only.
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Browse » Domains » Ocular » Visual Acuity

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Measure: Visual Acuity   #111100

Definition: Measurement of clarity or sharpness of vision, which is the ability of the eye to see and distinguish fine details.

Purpose: This assessment will provide information on rates of good to poor visual acuity in the cohort studied. The level of visual acuity is related to all ocular diseases and disorders, and is considered to be the most significant vital sign of ocular function. Visual acuity is often used to stratify respondents for more valid related comparisons, such as refractive errors (use or need for glasses or contact lens correction), which can be genetically influenced.




Keywords: Ocular, Eye, Visual acuity, ETDRS, Early Treatment Diabetic Retinopathy Study

Measure Release Date: February 26, 2010

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