To access the data, click or select the words “Appendix 3.” Pedigrees of four inbred families RD030, RD033, RP053 and RP171 in which reported variants c.214G>A; p. (Gly72Arg), c.6088C>T; p. (Arg2030*), c.6729+5_6729+19del; p.? and c.6218G>C; p. (Gly2073Ala) respectively in ABCA4 were identified respectively. Empty squares and circles show the unaffected males and females, respectively. The filled shapes show the affected individuals. The symbol labeled with a red arrow in each pedigree highlights the proband. Consanguineous unions are indicated by double lines.