Concentric macular rings: ultrawide-field biomarker in pediatric albinism.
PURPOSE To evaluate the prevalence and clinical relevance of the concentric macular rings (CMR) sign on ultrawide-field (UWF) imaging as a noninvasive marker of foveal hypoplasia (FH) in pediatric patients with albinism, in whom optical coherence tomography (OCT) acquisition is limited by nystagmus and poor fixation....