Table 2.

Prevalence of the Morphologic Characteristics of Macular Drusen Found in this Study

Drusen Morphology	Small		Intermediate		Large		Drusenoid Pigment Epithelial Detachments
	No.	%	No.	%	No.	%	No.	%
Shape
Concave	170	11.4%	253	10.3%	118	6.0%	4	1.4%
Convex	1299	87.0%	2165	87.7%	1809	91.7%	280	96.2%
Saw-toothed	0	0.0%	10	0.4%	29	1.5%	6	2.1%
Not classifiable	24	1.6%	40	1.6%	16	0.8%	1	0.3%
Reflectivity
Low	21	1.4%	25	1.0%	28	1.4%	5	1.7%
Medium	1348	90.3%	2226	90.2%	1798	91.2%	279	95.9%
High	96	6.4%	187	7.6%	110	5.6%	2	0.7%
Not classifiable	28	1.9%	30	1.2%	36	1.8%	5	1.7%
Homogeneity
Homogenous	1323	88.6%	2008	81.4%	1386	70.3%	202	69.4%
Nonhomogenous + core	51	3.4%	180	7.3%	253	12.8%	30	10.3%
Nonhomogenous	88	5.9%	242	9.8%	292	14.8%	53	18.2%
Not classifiable	31	2.1%	38	1.5%	41	2.1%	6	2.1%
Depolarizing contents
Nondepolarizing	1224	82.0%	1716	69.5%	1123	56.9%	212	72.9%
Nonhomogenous + core	44	2.9%	144	5.8%	246	12.5%	18	6.2%
Nonhomogenous depolarizing	125	8.4%	422	17.1%	507	25.7%	57	19.6%
Complete fill-out	98	6.6%	166	6.7%	61	3.1%	1	0.3%
Not classifiable	2	0.1%	20	0.8%	35	1.8%	3	1.0%
Hyperreflective foci
Absence	1492	99.9%	2463	99.8%	1962	99.5%	279	95.9%
Presence	1	0.1%	5	0.2%	10	0.5%	12	4.1%
Depolarizing foci
Absence	1493	100.0%	2462	99.8%	1968	99.8%	281	96.6%
Presence	0	0.0%	5	0.2%	4	0.2%	10	3.4%