Subclinical subretinal fluid detectable only by optical coherence tomography in choroidal naevi—the SON study

摘要

a Ultrawide field pseudocolour image (California, Optos® PLC, Dunfermline, UK) showing a pigmented choroidal naevus temporal to the macula. There is no clinical SRF, orange pigment or drusen. b There is a circular pool of hyperautofluorescence immediately inferonasal to the naevus. c Horizontal OCT rasters over the naevus were used to identify the maximal depth (white double ended arrow) and maximal horizontal diameter (yellow double-ended arrow) of SRF. d Vertical OCT rasters over the naevus were used to identify the maximal depth (white double ended arrow) and maximal vertical diameter (yellow double-ended arrow) of SRF. e Enhanced-depth imaging OCT outlines the posterior margin of the naevus for thickness calculation (double ended arrow). f B-scan ultrasonography shows the lesion to be hypodense and allows for further thickness calculation.