Effect of Atropine Eye Drops on Choroidal Thinning Induced by Hyperopic Retinal Defocus

Figure 1

The ETDRS grid overlay centred at the fovea was used to generate automated mean choroidal thickness measures. The central 1 mm diameter circle records the subfoveal choroidal thickness (SFCT). The thickness values within the 4 segments of the 1–3 mm diameter annulus were averaged to record the parafoveal choroidal thickness (PFCT).