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The effect of ocular dominance on choroidal structures.

Zeynep Özer Özcan1, Sevim Ayça Seyyar2, Kıvanç Güngör2

  • 1Department of Ophthalmology, Gaziantep State Hospital, Gaziantep, Turkey.

Laterality
|October 23, 2024
PubMed
Summary

Ocular dominance does not affect choroidal thickness (CT) or choroidal vascularity index (CVI) in healthy individuals. This suggests that data from either eye can be used in scientific research without bias.

Keywords:
choroidal thicknesschoroidal vascularity indexocular dominance

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Area of Science:

  • Ophthalmology
  • Optometry
  • Retinal Imaging

Background:

  • Ocular dominance is a common phenomenon in humans.
  • Its potential impact on ocular structures like the choroid is not fully understood.
  • Choroidal morphology is crucial for retinal health and function.

Purpose of the Study:

  • To investigate the effect of ocular dominance on choroidal morphology.
  • To compare choroidal thickness (CT) and choroidal vascularity index (CVI) between dominant and non-dominant eyes.
  • To determine if ocular dominance influences quantitative choroidal measurements.

Main Methods:

  • 150 healthy individuals (300 eyes) were recruited.
  • Ocular dominance was determined using the hole-in-the-card test.
  • Enhanced depth imaging optical coherence tomography (EDI-OCT) was used for choroidal imaging.
  • Choroidal thickness (CT) and choroidal vascularity index (CVI) were quantified using Image J software.

Main Results:

  • No statistically significant differences were found in subfoveal, nasal, or temporal choroidal thickness between dominant and non-dominant eyes (p > 0.05).
  • Measurements of total choroidal area, luminal area, stromal area, and CVI also showed no significant differences between the two eyes (p > 0.05).
  • Ocular dominance did not demonstrate any discernible effect on the measured choroidal structures.

Conclusions:

  • Ocular dominance does not appear to influence choroidal thickness or vascularity in healthy eyes.
  • These findings support the use of data from either the dominant or non-dominant eye in research studies involving CT and CVI.
  • Future research can consider randomized ocular data selection, irrespective of eye dominance, for choroidal investigations.