Table 4.

Distribution of retinal alterations observed in colour, FAF, and optimized-FAF images in control subjects.

	Image type			p value	p value post hoc test
	Colour	FAF	Optimized-FAF		Colour versus FAF	Colour versus optimized-FAF	FAF versus optimized-FAF
Epithelial defects
Upper temporal area	1.92 ± 2.06	10.08 ± 4.60	19.61 ± 7.69	<0.001a	<0.001c	<0.001c	<0.001c
Lower temporal area	1.15 ± 1.28	9.61 ± 6.65	18.77 ± 9.04	<0.001a	<0.001c	<0.001c	0.008c
Upper nasal area	0.85 ± 1.40	3.08 ± 2.29	5.61 ± 3.69	<0.001b	0.007d	<0.001d	0.048c
Lower nasal area	0.92 ± 1.60	3.08 ± 2.06	5.61 ± 3.20	<0.001b	0.01d	<0.001d	0.026c
Capillary dilation
Upper temporal area	3.85 ± 2.91	13.77 ± 4.21	12.23 ± 3.63	<0.001a	<0.001c	<0.001c	0.328c
Lower temporal area	4.15 ± 2.73	13.15 ± 7.20	13.00 ± 4.08	<0.001a	<0.001c	<0.001c	0.947c
Upper nasal area	0.69 ± 1.18	3.08 ± 1.98	3.15 ± 1.62	<0.001a	0.001c	<0.001c	0.915c
Lower nasal area	0.54 ± 0.97	2.69 ± 2.21	3.31 ± 1.97	<0.001b	0.001d	<0.001d	0.462c

^aOne-way ANOVA test; ^bKruskal-Wallis test; ^cunpaired t test; ^dMann-Whitney U test; FAF: fundus autofluorescence.