PMC9842519_01
Color fundus photographs of the first case. (Left) Fundus photograph of the right eye indicated a wagon-wheel retinochoroidal scar in the macula, with no active lesions. (Right) Fundus photograph of the left eye showed multiple retinochoroidal scars in the parafoveal area, with retinal exudates and vascular sheathing noted at the temporal margin of the previous scar (yellow arrow).
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Indirect ophthalmoscopy examination revealed a wagon-wheel retinochoroidal scar on the macula and a pale optic disc on the right eye, and on the left eye we found multiple retinochoroidal scars in the perifoveal area with perivascular sheathing and mild exudate noted at the outer margin of the previous retinochoroidal scar (Figure 1). 
The OCT image of the first case. The examination revealed macular thinning in both eyes. The average thickness of the left eye (right) was thicker than the right eye (left). The SD-OCT reveals thinning of retinal layers and epiretinal membrane formation in the left eye.
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Horizontal brightness scan (B-scan) of the left eye showed full thickness retinal thinning and epiretinal membrane formation (Figure 2). 
The left eye OCTA image of the first case. The analysis of the superficial retinal layer (A) and deep retinal layer (B) showed hypointense areas marked as dark areas, which revealed decreased perfusion. These findings are also noted in choriocapillaris (C), but the choroidal layer (D) only showed multiple dark spots due to the previous retinochoroidal scar. The horizontal section of retinal layer (E) showed full thickness retinal thinning with disruption of the RPE and epiretinal membrane formation (yellow arrow).
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The OCTA image of the left eye (Figure 3A-D) showed hypointense areas in the superficial and deep retinal layers, which revealed decrease in perfusion, and it was also found in the choriocapillaris layer, while choroidal layer only showed multiple dark spots. The horizontal section of retinal layers (Figure 3E) showed full thickness retinal thinning with disruption of the retinal pigment epithelium (RPE) with formation of epiretinal membrane.
PMC9842519_02
Color fundus Photograph of the second case. (Left) The posterior pole of the right eye showed multiple retinochoroidal scars in the parafoveal area and yellowish exudate adjacent to the previous hyperpigmented scar (yellow arrow) represented recurrent infection. (Right) The fundus of the left eye was unremarkable.
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Indirect ophthalmoscopy examination showed multiple retinochoroidal scars in the right eye, with retinal exudate at the outer margin of the previous scar (Figure 4).
The OCT finding of the second case. (Left) The result revealed macular thinning in the right eye and epiretinal membrane formation, with choroidal shadowing. (Right) The left eye image was unremarkable.
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The SD-OCT examination (Figure 5) shows a marked decrease in central thickness in the right eye (96 mum) with the average thickness was 234 mum.
The OCTA image in the active lesion showed perfusion loss that marked with hypointense area. The lack of perfusion area related to the active lesion is shown in the superficial retinal layer (A) and more distinct in the deep retinal layer (B). It is also noted in the choroidal layer (C) and the choriocapillaris (D). The horizontal section of retinal layer (E) showed full thickness retinal thinning with choroidal shadowing and formation of epiretinal membrane (yellow arrow).
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The OCTA in 6x6 mm area using Cirrus HD-OCT 5000 by Zeiss examination revealed a lack of perfusion marked with hypointense area, which was less visible in superficial retinal layer and becomes more distinct in the deeper layer, as shown in Figure 6A-D. We also noted other pathological conditions caused by the presence of epiretinal membrane, retinal thinning, and choroidal shadowing (Figure 6E).