Cross-sectional SS-OCT shows anterior bowing of Bruch’s membrane due to the bulk of the nevus, with an overlying shallow irregular pigment epithelial detachment with intermediately reflective contents. Extreme thinning of the residual choroid is noted over the temporal aspect of the nevus with distended vessels and choroidal thickening immediately adjacent to the nevus. One prominent vessel within the nevus substance appears to be a Haller vessel around which the nevus has grown.

Figure 14.2 illustrates a subfoveal amelanotic choroidal nevus in the left eye of a 41-year-old male. Color and red-free photography show the amelanotic lesion and an area of altered coloration temporal to the lesion, corresponding with chronic shallow subretinal fluid. A horizontal cross-sectional SS-OCT line scan shows the distentive effects of the nevus on tissues related to it anteriorly, and related to the sclera posteriorly. Shallow neurosensory detachment is seen nasal to the nevus and ellipsoid loss is seen temporal to the nevus, presumed secondary to regressed chronic subretinal fluid. A shallow irregular pigment epithelial detachment is seen at the apex of the nevus, the contents of which are intermediately reflective.