Fig. 4

Color fundus photograph (left panel) showing active lesions of TBSLC and fundus autofluorescence (right panel) showing stage I (acute) lesions (blue arrows), characterized by an ill-defined, diffuse halo of hyper autofluorescence along the active lesion (a). In stage II (subacute), a thin hypoautofluorescent rim (blue arrows) appears at the border of the lesion as it begins to heal, and the central hyperautofluorescence becomes prominent (b). In stage III, as the central hyper autofluorescence decreases and peripheral hypoautofluorescence increases (blue arrows), the lesion appears stippled (c). In stage IV, with complete healing of the lesion over several months, there is generalized hypo autofluorescence (blue arrows) (d)