Factors influencing foveal avascular zone size in healthy eyes

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Published: Jun 1, 2021
DOI: https://doi.org/10.36281/2021010205
Keywords:
Foveal avascular zone, foveal macular thickness.

Main Article Content

Sittikorn Laojaroenwanit
Sisaket Hospital
Adisai Varadisai
Department of Ophthalmology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
Pear Pongsachareonnont
Department of Ophthalmology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
Thanapong Somkijrungroj
Department of Ophthalmology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
Kittisak Kulvichit
Department of Ophthalmology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand

Abstract

Purpose: To evaluate of factors influencing foveal avascular zone (FAZ) size.


Methods: In this cross-sectional study, both eyes of healthy subjects were scanned with swept-source OCT-A PLEX Elite 9000 for superficial and deep capillary FAZ layers and foveal macular thickness (FMT).


Results: In 224 eyes from 112 healthy subjects, mean ± standard deviation (SD) of superficial capillary plexus (SCP)-FAZ size was 0.31±0.1 mm2 (95% confidence interval (CI), 0.29, 0.33) and 0.30±0.1 mm2 (95% CI, 0.29, 0.32), and that of deep capillary plexus (DCP)-FAZ size was 0.56±0.22 mm2 (95% CI, 0.52, 0.60) and 0.56±0.21 mm2 (95% CI, 0.52, 0.60) in the right and left eyes, respectively. The FMT was 379.48±37.66 µm (95% CI, 372.43, 386.53) and 382.04±36.61 µm (95% CI, 375.19, 388.90) in the right and left eyes, respectively. On multivariate analysis, SCP-FAZ and DCP-FAZ varied with age and sex.


Conclusion: Age and sex influence the FAZ size.


Conflicts of Interest: There are no conflicts of interest.


Keywords: Foveal avascular zone, foveal macular thickness.

Article Details

Issue
Vol. 16 No. 1 (2021): January-June 2021
Section
Original Study

References

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