Macular electroretinogram in Stargardt's disease/fundus flavimaculatus.

Dear Editor We appreciate the comments by Gundogan et al. [1] on our paper entitled ‘Multifocal electroretinograms in Stargardt’s disease/fundus flavimaculatus’, published in Ophthalmologica [2] . They asked us to present more details on the full-field electroretinograms (ERGs) and also to calculate the correlation between the visual amplitudes of the multifocal ERGs’ central response, the visual acuity and age for each type of Stargardt’s disease/fundus flavimaculatus (SFF) [3] . For full-field ERGs, Itabashi et al. [4] from our laboratory published a detailed report on the retinal function in patients with SFF using the same ERG recording system as was used in our paper [fig. 7 in 4 ]. The cone responses (photopic b-wave) were significantly reduced in SFF, and the retinal function was the worst in SFF type 3E [4] . The full-field and multifocal ERG findings in our patients [2] are in good agreement with the results presented in the paper by Itabashi et al. [4] . We have also calculated the correlation between the central multifocal ERGs’ responses and the best-corrected visual acuity (BCVA) for each type of SFF ( fig. 1 ). As shown in figure 1 a, c, no significant correlation was found between the BCVA and the Received: November 11, 2014 Accepted: November 13, 2014 Published online: December 24, 2014