Table 3:

Enhanced-depth Imaging Spectral-domain Optical Coherence Tomography Features Correlated With Clinical Characteristics of Ultrasonographically Flat Choroidal Lesions

Type	LBD (mm)	Pigmentation	Juxtapapillary	Symptoms	Drusen	OP	SRF	IR	AF
0	4	Lightly pigmented	33%	33%	33%	0%	0%	Invisible	Invisible
1	1.5	Pigmented or lightly pigmented	40%	3%	23%	3%	0%	51% pale 34% white 11% invisible 3% dark	90% invisible
2	3.6	Pigmented or lightly pigmented	33%	0%	53%	20%	0%	53% white 40% pale 7% dark	80% invisible 20% hypo-AF
3	3.5	Pigmented or lightly pigmented; 21% with halo	29%	14%	43%	21%	21%	43% pale 29% white 21% invisible 7% dark w/halo	67% invisible 14% hypo-AF 14% with hyper-AF flecks
4	3.6	70% pigmented or lightly pigmented; 19% amelanotic 11% with halo	22%	7%	41%	26%	19%	37% dark (10% w/halo) 33% pale 19% invisible 11% white	64% invisible 32% hypo-AF

^*Type 0 = Not visible (n=3), Type 1 = Hyperreflective but confined within normal choroidal thickness (n = 35), Type 2 = Discrete (anteriorly bowed hyperreflectivity cascading at lesion edges) (n = 15), Type 3 = Posteriorly bowed (n = 14), Type 4 = Elevated (n = 27); LBD = mean largest basal diameter in millimeters, OP = orange pigment, SRF = subretinal fluid, IR = infrared (imaging), AF = autofluorescence (imaging)