Variations in the Accommodative and Vergence Responses, in addition to Visual Discomfort, in University Optometry Students Following Prolonged Near Work

Authors

  • Bidisha Bhattacharya
  • Anitha Arvind

Keywords:

Emmetropia, Ametropia, The Visual discomfort questionnaire, monocular estimation method, accommodative amplitudes, monocular and binocular accommodative facility

Abstract

Purpose: To assess the accommodative and vergence response changes along with visual discomfort in university optometry student population after a prolonged near work. Methods:This study was done between July 1 and November 30, 2024, at Delhi Skill & Entrepreneurship University. Sixty participants with refractive error (+/- 0.50DS to +/- 3.00DS) and no prior history of orthoptics exercises were included. The Visual discomfort questionnaire (VDQ) was administered at baseline and after 7 hours of near work to evaluate asthenopic symptoms. Accommodative and vergence parameters were measured clinically pre- and post-classes. Results: Of the 60 students, 23 were male (age range of 18 to 25 years). The 47% (n=28) had Emmetropia and 53% (n=32) had Ametropia. Accommodative parameters include Monocular Estimation method (mean difference, 1.15 ± 0.10 diopters), Accommodative amplitudes (mean difference, 2.71 ± 0.62 diopters) and both Monocular and Binocular Accommodative Facility measurements (mean difference, 3.29 ± 0.19cpm) reported statistically significant differences (P<0.001) between the two measurements for both Emmetropes and Ametropes group. Vergence parameters were statistically significant (p>0.05). At baseline, 60% reported no discomfort, 25% reported discomfort occasionally, 12% often, and 2% always. Post-classes discomfort increased occasionally to 32%, but it was not statistically significant (p> 0.05). Conclusion: Our study shows a significant change in accommodative variables for both groups (Emmetropes & Ametropes). VDQ scores shows no statistically significant differences between pre and post near work. These findings suggest that prolonged near work impacts accommodative function but do not significantly alter self-reported discomfort levels

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Published

2025-04-30

How to Cite

1.
Bhattacharya B, Arvind A. Variations in the Accommodative and Vergence Responses, in addition to Visual Discomfort, in University Optometry Students Following Prolonged Near Work. J Neonatal Surg [Internet]. 2025Apr.30 [cited 2025Sep.21];14(20S):61-8. Available from: https://jneonatalsurg.com/index.php/jns/article/view/4917

Issue

Vol. 14 No. 20S (2025): Journal of Neonatal Surgery

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Original Article

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