Table 2.

Characteristics of Patient Groups.

	Group I	Group II	Group III	Group IV
N (number)	9	8	10	7
males, females	6,3	5,3	6,4	6,1
age (mean ± SD)	24.5 ± 10.07	44.87 ± 22.80	28.6 ± 20.56	43.29 ± 18.48
features of images	central area of atrophy with or without flecks extending to the vascular arcades	central atrophy and varying degrees of flecks, with inferonasal sparing	central atrophy with widespread flecks	severe disease with central atrophy and widespread dark mottling