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Ekici Gok Z, Gunduz A, Cankaya C. Effect of Fasting on Contrast Sensitivity in Healthy Males. JOVR [Internet]. 2019Jul.18 [cited 2024Apr.26];14(3):315–320. Available from: https://knepublishing.com/index.php/JOVR/article/view/4789

https://doi.org/10.18502/jovr.v14i3.4789

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authors

  • Zarife Ekici Gok

    Zarife Ekici Gok

    Inonu University School of Medicine, Department of Ophthalmology, Malatya, Turkey
  • Abuzer Gunduz

    Abuzer Gunduz

    Inonu University School of Medicine, Department of Ophthalmology, Malatya, Turkey
  • Cem Cankaya

    Cem Cankaya

    Inonu University School of Medicine, Department of Ophthalmology, Malatya, Turkey

Published Date

  • Jul 18, 2019
This journal is publishing all the articles under Creative Commons Attribution License CC BY 4.0.

Effect of Fasting on Contrast Sensitivity in Healthy Males

Journal of Ophthalmic and Vision Research (JOVR) / July–September 2019, Volume 14, Issue 3 / Pages 315–320

Abstract

Purpose: To evaluate the effect of fasting on contrast sensitivity (CS) in healthy male individuals during the month of Ramadan.


Methods: This study included 45 healthy male individuals, aged between 20 and 40 years, working in the same environment. Functional acuity contrast testing (F.A.C.T) was performed using the Optec 6500 vision testing system. Measurements taken during a state of satiety one week before Ramadan were compared with those taken a minimum of 12 hours after the start of fasting in the first and fourth weeks of Ramadan.


Results: Contrast sensitivity (CS) was increased at the spatial frequency of three cycles per degree (cpd) at the end of the first week of Ramadan in comparison to the CS measured before Ramadan (P = 0.03). The mean CS values were increased at the spatial frequencies of 3 and 12 cpd at the end of the last week of Ramadan in comparison to the mean values measured before Ramadan (P = 0.01 for both).


Conclusion: Although we found statistically significant increases in CS at certain frequencies, we can conclude that Ramadan fasting has no negative effects on CS.

Keywords:

Contrast Sensitivity; Fasting; Ramadan Fasting

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