Table 2.

Swept-source optical coherence tomography characteristics of the imaged choroidal lesions, according to image quality

	Optimal (n=24)	Suboptimal(n=31)	Poor (n=30)	P values
Intraretinal fluid
Absent	20 (83%)	26 (87%)	10 (45%)	0.89
Present	4 (17%)	4 (13%)	4 (13%)
Subretinal fluid
Absent	9 (37%)	9 (30%)	5 (17%)	0.57
Present	15 (63%)	21 (67%)	17 (57%)
Drusen
Absent	6 (25%)	6 (19%)	3 (10%)	0.60
Present	18 (75%)	24 (77%)	20 (67%)
Ellipsoid zone
Disrupted	18 (75%)	24 (77%)	20 (67%)	0.38
Normal	6 (25%)	6 (19%)	2 (7%)
Visibility of posterior limit
Absent	0	1 (3%)	9 (30%)	<0.001
Present	24 (100%)	30 (97%)	21 (70%)
Visibility of anterior limit
Absent	0	6 (19%)	20 (67%)	<0.001
Present	24 (100%)	25 (81%)	10 (33%)
Visibility of scleral-choroidal interface
No	0	10 (32%)	30 (100%)	<0.001
Possible	2 (8%)	15 (48%)	0
Yes	22 (92%)	6 (19%)	0
Inner reflectivity
Intermediate	20 (83%)	9 (30%)	3 (10%)	<0.001
High	4 (17%)	22 (70%)	22 (73%)
Type of reflectivity
High with posterior shadowing	1 (4%)	10 (32%)	21 (70%)	<0.001
Heterogeneous	16 (67%)	15 (48%)	1 (3%)
Homogenous	7 (29%)	6 (19%)	3 (10%)
Lesion configuration*
No distention	5 (21%)	7 (23%)		0.21
Almond	12 (50%)	14 (45%)
Dome	4 (17%)	7 (23%)
Plateau	3 (13%)	0
Choriocapillaries visible above lesion*
Absent	10 (42%)	19 (61%)		0.16
Present	14 (58%)	12 (39%)
Vessels within lesion*
Absent	18 (75%)	28 (90%)		0.14
Present	6 (25%)	3 (10%)
Cavities within lesion*
Absent	23 (96%)	31 (100%)		0.26
Present	1 (4%)	0
Hyporeflective gradation of lesion-scleral interface*
Absent	12 (50%)	27 (87%)		0.005
Present	12 (50%)	4 (13%)
Median choroidal thickness (μm)* (range)	503 (119–1,676)	608 (214–1,371)		0.88
Maximum lesion width (mm)* (range)	5.11 (1.49–11.03)	4.90 (0.92–7.63)		0.69

^*Only lesions with optimal and suboptimal image quality were analysed.