ABCA4 and Macular dystrophy: It is likely that the low diagnostic yield for patients with macular dystrophy is a result of the genetic testing algorithm used here, as patients with phenotypic clues as to their genotype (vitelliform lesion suggestive of BEST1‐associated disease, schisis suggestive of RS1, flecks indicative of ABCA4 or PRPH2) were investigated by another route.