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The correlation of hyperopia and choroidal thickness, vessel diameter and area

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This study evaluates the effect of axial length and hyperopia error on macular choroidal thickness as well as choroidal vessel lumen diameter and area with EDI-OCT in short eyes.

Materials and methods

The study includes 64 volunteers who are over 18 years of ages and applied to Eye Clinic of Ankara Training and Research Hospital. Choroidal thickness, choroidal vessel lumen diameter and areas were measured with Spectralis® OCT device using EDI technique.


The study group included 44 volunteers with hyperopic refractive error, and control group included 20 emmetropic volunteers. Macular choroid was statistically significantly thicker in all quadrants as the hyperopia error increased (p < 0.001). There was a statistically significant negative correlation between axial lengths and macular choroidal thicknesses in all quadrants (p < 0.001). There was a statistically significant difference in choroidal vessel lumen diameter and area between hyperopia groups for both large and small vessels (p < 0.01). The relationships between mean axial length and mean large choroidal vessel diameter and mean area measurements were negatively correlated and they were statistically significant. On the other hand, there was no such negative correlation with small choroidal vessels that have small diameter and area.


Macular choroid thickens as the hyperopic error increases as well as axial length decreases in short eyes. The diameters and areas of noticeable large choroidal vessels in EDI-OCT also increase. These findings in EDI-OCT measurements may play a role in developing population nomograms, as a correcting parameter and in understanding the pathophysiology of certain diseases in short eyes.

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Correspondence to Ahmet Kaderli.

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Conflict of interest

All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Kaderli, A., Acar, M.A., Ünlü, N. et al. The correlation of hyperopia and choroidal thickness, vessel diameter and area. Int Ophthalmol 38, 645–653 (2018).

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