Table 2.

Average scores for subjective image quality assessment of optical coherence tomography angiography images.

	Averaged Image	Denoised Image	P Value *	$\mathit{\kappa }$ in Averaged Images	$\mathit{\kappa }$ in Denoised Images
Overall impression	1.22 ± 0.61	1.83 ± 0.38	<0.0001	0.965	0.978
Clarity of vessel image	1.17 ± 0.57	1.96 ± 0.19	<0.0001	0.985	0.936
Noise level in avascular area	1.27 ± 0.64	1.92 ± 0.27	<0.0001	0.952	0.782

* Comparison between averaged and denoised image by paired t test.