Fig. 1
From: Novel grading system for quantification of cystic macular lesions in Usher syndrome

The schematic grading of cystic macular lesions in optical coherence tomography images. Retinal cystic lesions were quantified through the fovea line scan within to 15° eccentricity. Evaluated parameters were: total quantity of cystic macular lesions (N = N1 + N2 + […] + Nn); averaged largest diameter of all cystic lesions (D = (D1 + D2 + […] + Dn)/n); layer affected by cystic lesions (L); presence/absence of foveal retinal layer/-s swelling (Fs+/ Fs-), if boundaries of cystic lesions were not detectable (e.g. media opacities); central macular thickness (CMT)