Normative Scores for the NIH Toolbox Dynamic Visual Acuity Test from 3 to 85 Years.

Area of Science:

• Neuroscience
• Ophthalmology
• Vestibular System Research

Background:

• The National Institutes of Health Toolbox initiative aimed to develop efficient health assessments.
• Dynamic visual acuity (DVA) is crucial for vestibular and visual function, but standardized testing is needed.
• A computerized DVA (cDVA) test offers a potentially cost- and time-efficient solution.

Purpose of the Study:

• To establish normative reference values for the computerized dynamic visual acuity (cDVA) test.
• To evaluate the influence of sociodemographic factors on cDVA.
• To validate both long and short versions of the cDVA test against normative data and their ability to detect vestibular pathology.

Main Methods:

• 3,992 individuals aged 3-85 years without vestibular pathology were tested across multiple US sites.
• cDVA scores were analyzed and stratified by age and sex.
• Normative data were used as a criterion to compare long and short cDVA test versions.

Main Results:

• cDVA was significantly worse in males (p < 0.001) and individuals aged 50 years and older.
• No significant differences in cDVA were observed in age groups from 3 to 49 years.
• Both long and short cDVA versions effectively distinguished individuals with and without vestibular pathology (p = 0.0002 and p = 0.0025, respectively).
• High correlation (ICC = 0.86) was found between the long and short cDVA versions.

Conclusions:

• The cDVA test provides reliable normative data for assessing visual and vestibular function across a wide age range.
• Age (≥50 years) and male sex are associated with reduced cDVA.
• The cDVA test, in both long and short forms, is a valid and efficient tool for clinical use, including the detection of vestibular dysfunction.