Optical Coherence Tomography Angiography in Healthy Adult Subjects: Normative Values, Frequency, and Impact of Artifacts

Table 1

Characteristics of the study sample including normative OCTA values and the types of artifacts.

	Count	Column %	Mean	Standard deviation
Laterality
Left	91	50.3%
Right	90	49.7%
Image quality			62	7
Central vascular density			19.28	9.19
Presence of artifact
No	97	53.6%
Yes	84	46.4%
Decentration	1	0.6%
Segmentation	2	1.1%
Motion	29	16.0%
Defocus	4	2.2%
Blink	18	9.9%
Refractive shift	5	2.8%
Shadow	7	3.9%
Z offset	8	4.4%
Tilt	7	3.9%
Projection	3	1.7%
Central macular thickness (μm)			237	25
Choroidal thickness (μm)			257	74
Superior vascular density			48.70	5.76
Nasal vascular density			45.99	4.74
Inferior vascular density			47.58	5.12
Temporal vascular density			45.29	5.57