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3D asthenopia in horizontal deviation.

Seung-Hyun Kim1, Young-Woo Suh, Cheol-Min Yun

  • 1Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea. ansaneye@hanmail.net

Current Eye Research
|February 15, 2013
PubMed
Summary
This summary is machine-generated.

Asthenopic symptoms, or eye strain, during stereoscopic 3D (S3D) television viewing were linked to exotropia (outward turning eye) but not esotropia (inward turning eye). This suggests S3D viewing discomfort is associated with convergence demand in patients with exotropia.

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Area of Science:

  • Ophthalmology
  • Vision Science
  • Human Factors

Background:

  • Stereoscopic 3D (S3D) television offers immersive viewing experiences but can induce asthenopic symptoms.
  • Understanding the impact of pre-existing binocular vision anomalies, such as exotropia and esotropia, on S3D viewing comfort is crucial for patient well-being.

Purpose of the Study:

  • To investigate asthenopic symptoms experienced by patients with exotropia and esotropia while viewing S3D television.
  • To compare S3D perception and symptom prevalence across different vergence groups.

Main Methods:

  • Seventy-seven participants (≥9 years) were divided into exodeviation (Exo, n=34), esodeviation (Eso, n=11), and normal binocular vision (Control, n=32) groups.
  • Subjects watched 20 minutes of S3D TV, followed by assessments of visual acuity, refractive error, strabismus angle, stereopsis, and a subjective questionnaire on S3D perception and asthenopic symptoms (headache, dizziness, eye fatigue).

Main Results:

  • The Exo group exhibited significantly poorer stereoacuity and decreased 3D perception compared to the Control group (p < 0.001).
  • The Exo group reported significantly more eye fatigue (p < 0.001) than the Eso and Control groups.
  • While exodeviation amount did not correlate with asthenopic symptoms, prior corrective surgery in the Exo group reduced ocular fatigue.

Conclusions:

  • Asthenopic symptoms during S3D viewing are associated with exodeviation, not esodeviation.
  • The findings suggest that convergence demand during S3D viewing plays a significant role in the development of asthenopia in individuals with exotropia.