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Related Experiment Video

Updated: Jan 10, 2026

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
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Visual Perception Changes After Transcranial Photobiomodulation: Preliminary Eye-Tracking Study.

Alex O Trofimov1,2, Elizabeth Kalinkina1, Anastasia Medvedeva1

  • 1Department of Neurological Diseases, Privolzhsky Research Medical University, Nizhny Novgorod, Russian Federation.

Advances in Experimental Medicine and Biology
|November 22, 2025
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Summary

Transcranial photobiomodulation (t-PBM) significantly enhances visual perception in young adults. Eye-tracking revealed improved vergence reactivity after t-PBM treatment.

Keywords:
Eye-trackingPhotobiomodulationVisual perception

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Biomedical Engineering

Background:

  • Visual perception is crucial for daily activities.
  • Understanding factors influencing visual perception is important.
  • Photobiomodulation is an emerging therapeutic modality.

Purpose of the Study:

  • To investigate the effects of transcranial photobiomodulation (t-PBM) on visual perception.
  • To assess changes in eye-tracking data following t-PBM in healthy young adults.

Main Methods:

  • A non-randomized study with 53 healthy volunteers.
  • Eye-tracking was performed before and after t-PBM.
  • Statistical analysis used the Wilcoxon signed-rank test (p < 0.05).

Main Results:

  • Vertical vergence reactivity (VRx) significantly increased post-t-PBM (p < 0.05).
  • Horizontal VRx also showed a significant increase after t-PBM (p < 0.05).

Conclusions:

  • Transcranial PBM demonstrates a positive impact on visual perception.
  • The study highlights t-PBM's potential to improve visual function in young, healthy individuals.