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The Impact on Vergence Parameters After Smartphone Gaming.

Vishal Biswas1, Roshni Majumder2

  • 1Department of Optometry, School of Allied Health Sciences, Noida International University, India.

The British and Irish Orthoptic Journal
|May 13, 2024
PubMed
Summary

Smartphone gaming negatively impacts eye vergence, causing significant decreases in near point of convergence, fusional vergence, and vergence facility in young adults after just 30 minutes of play.

Keywords:
Binocular VisionVergencesmartphone gaming

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Area of Science:

  • Ophthalmology
  • Vision Science
  • Human Factors

Background:

  • The increasing prevalence of smartphone use, particularly for gaming, raises concerns about potential visual system strain.
  • Understanding the effects of prolonged digital screen engagement on binocular vision is crucial for public health.

Purpose of the Study:

  • To investigate the immediate impact of smartphone gaming on the vergence system.
  • To assess changes in key vergence parameters following a controlled gaming session.

Main Methods:

  • A comparative experimental study involving 82 young adults (mean age 21.98 years).
  • Participants played a smartphone shooting game for 30 minutes at a 40 cm viewing distance.
  • Vergence parameters, including Near Point of Convergence (NPC), Negative Fusional Vergence (NFV), Positive Fusional Vergence (PFV), and Vergence Facility (VF), were measured before and after gaming.

Main Results:

  • A statistically significant decrease was observed in all measured vergence parameters post-gaming (p < 0.001 for all).
  • Specifically, NPC, NFV, PFV (for near distance), and VF showed significant reductions.

Conclusions:

  • Smartphone gaming for 30 minutes adversely affects the vergence system.
  • These findings suggest a potential risk of developing binocular vision anomalies in young individuals due to intensive smartphone use.