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Author Spotlight: Assessment of Visual Acuity in Central Vision Loss Through Motion-Based Peripheral Vision Testing
Published on: February 23, 2024
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Sports and Kinetic Visual Acuity.
Juntendo Iji Zasshi = Juntendo Medical Journal
|July 18, 2024
Summary
Kinetic vision acuity (KVA) measures the ability to track moving objects. Higher KVA is linked to athletic performance, but it doesn't improve with training and declines with age, though kendo practice may mitigate this.
Area of Science:
- Ophthalmology and Sports Science
Background:
- Kinetic vision acuity (KVA) is a measure of the ability to discern moving objects.
- KVA was developed in Japan in the 1960s, with measurement devices invented in 1968.
Purpose of the Study:
- To review the history and characteristics of KVA.
- To examine factors influencing KVA, including athletic performance, age, and nutritional supplements.
- To investigate the effects of docosahexaenoic acid (DHA) and astaxanthin on KVA.
Main Methods:
- Review of historical data and studies on KVA.
- Analysis of KVA in athletes across different sports (track-and-field, skeleton, kendo).
- Investigation of correlations between KVA, static visual acuity, reaction time, and visual-evoked potentials.
- Assessment of KVA changes with age and the impact of training and nutritional interventions (DHA, astaxanthin).
Main Results:
- Higher-ranked athletes in track-and-field and skeleton exhibit superior KVA.
- KVA is not predictable by static visual acuity or reaction time but correlates with visual-evoked potentials.
- KVA shows no improvement with training and remains stable between ages 8-17.
- Kendo practice may slow age-related KVA decline; DHA supplementation may benefit individuals with low KVA, while astaxanthin showed no effect.
Conclusions:
- KVA is a distinct visual function important in certain sports.
- Age and specific practices like kendo influence KVA, and DHA may offer benefits for low KVA.
- Further research is needed to understand the full scope of factors affecting KVA.
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