It should be noted that among the eight PRPH2-associated RP cases included in this study, the “infinity sign” was observed in three cases, and a broad-banded AF leading edge was observed in four cases, both of which occurred relatively frequently although it remains difficult to determine whether these FAF features are characteristic of PRPH2-associated RP because of its limited number. The gene discussed is PRPH2; the disease is atrial fibrillation.