Comment on the Paper by Kuniyoshi et al. Entitled ‘Multifocal Electroretinograms in Stargardt's Disease/Fundus Flavimaculatus'

focal ERGs of almost all of their patients. However, we would like the authors to provide more details about the full-field ERG parameters (rod response, combined rod-cone response, oscillatory potentials and single cone and 30-Hz flicker responses) in the 4 groups. Small numbers of eyes in some groups may decrease the statistical power. On the other hand, expected big differences between the groups have a clinical meaning. The result of such a statistical analysis may reflect the differences in retinal involvement between the groups better. Secondly, correlation analyses between age, central multifocal ERG amplitude/implicit times and logMAR viDear Editor We congratulate Kuniyoshi et al. [1] on their study entitled ‘Multifocal electroretinograms in Stargardt’s disease/fundus flavimaculatus’. The authors grouped their patients into 4 types according to the classification by Noble and Carr [2] . They found that multifocal electroretinogram (ERG) results were well-correlated to their patients’ fundus appearances. Their results confirmed the accuracy of Noble and Carr’s [2] classification from an ocular electrophysiological point of view. For this reason, the study stands at an important point in the understanding of Stargardt’s disease/fundus flavimaculatus. The authors collected full-field and multiReceived: October 26, 2014 Accepted: November 13, 2014 Published online: December 24, 2014