Macular thickness map shows global retinal thinning

On the basis of clinicalfundus and angiographic findings, BCD can be seen in four different stages.8 In our study we also found nearly similar spectrum of findings on OCT but OCT staging does not always corroborate with clinical staging. The left eye of case 2 shows stage 4 OCT findings though clinically seem to be an intermediate stage (Figure 6). Similarly right eye of case 5 shows of light by crystals to this highly reflective retinal layers. Outer retinal hypo-reflectivity seen on OCT scan in stage 2 onwards is indicative of photoreceptors loss and correlates well with histopathological reports in the literature.13 The atrophy of the retinal layers, RPE and sclerosis of choriocapillaris results in increased reflectivity from the choroid.

stage 2 OCT findings while clinically looks like early disease (Figure Due to retinal atrophy and less contrast subtle macular changes 2A-C). are poorly discernable on clinical examination in patients with

Figure 5: Fundus photographs and OCT images. 5A: Fundus photograph of right eye of case 3 shows absence of crystals with complete chorioretinal atrophy in the posterior pole suggesting clinically of end stage BCD. 5B, C: Horizontal and vertical 6 mm OCT line scans of same eye show retinal thinning and foveal atrophy. This extended hyper-reflectivity from RPE-Bruch’s membrane complex is suggestive of sclerosis of the choriocapillaris. 2H: Macular thickness map shows global retinal thinning.

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