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LIFE SCIENCES IN SPACE RESEARCH

Volume 37, May 2023, Pages 3-6

OPINION/POSITION PAPER
DYNAMIC VISUAL ACUITY AS A BIOMETRIC FOR ASTRONAUT PERFORMANCE AND SAFETY

Author links open overlay panelEthan Waisberg a, Joshua Ong b, Phani Paladugu c,
Sharif Amit Kamran d, Nasif Zaman d, Andrew G. Lee e f g h i j k l, Alireza
Tavakkoli d
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https://doi.org/10.1016/j.lssr.2023.01.002Get rights and content
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HIGHLIGHTS



•

Dynamic visual acuity (DVA) is the ability to visualize objects during head
movement, or objects that are in motion.

•

Maintaining optimal astronaut vision during long-duration spaceflight (LDSF) is
essential for mission safety and human performance.

•

We suggest that DVA assessment during spaceflight and during G-transitions
should be considered to help further understand the vestibulo-ocular impacts of
interplanetary spaceflight.




ABSTRACT

Astronauts are exposed to an austere and constantly changing environment during
space travel. To respond to these rapid environmental changes, high levels of
dynamic visual acuity (DVA) are required. DVA is the ability to visualize
objects that are in motion, or with head movement and has previously been shown
to decrease significantly following spaceflight. Decreased DVA can potentially
impact astronauts while performing mission critical tasks and drive space motion
sickness. In this paper, we suggest that DVA assessment during spaceflight and
during G-transitions should be considered to help further understand the
vestibulo-ocular impacts of interplanetary spaceflight and ensure mission
performance including potential manned missions to Mars.

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KEYWORDS

Dynamic visual acuity
DVA
Long-duration spaceflight
G-transitions
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© 2023 The Committee on Space Research (COSPAR). Published by Elsevier B.V.


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