Dynamic visual acuity as a biometric for astronaut performance and safety

Ethan Waisberg, Joshua Ong, Phani Paladugu, Sharif Amit Kamran, Nasif Zaman, Andrew G. Lee, Alireza Tavakkoli

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)3-6
Number of pages4
JournalLife Sciences in Space Research
StatePublished - May 2023


  • DVA
  • Dynamic visual acuity
  • G-transitions
  • Long-duration spaceflight
  • Humans
  • Astronauts
  • Space Flight
  • Visual Acuity
  • Biometry

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Radiation
  • Agricultural and Biological Sciences (miscellaneous)
  • Health, Toxicology and Mutagenesis
  • Ecology


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