Figure 1

Pedigrees initially referred for congenital X-linked nystagmus.Black squares are for affected males, small solid circle within open circles for obligate carrier females, open symbols for non affected individuals. ?: undefined clinical status prior to doing molecular study. Numbered individuals are those in whom molecular investigation of the OA1 gene was performed. Results of the OA1-CA microsatellite analysis are given in families OA1-1 and OA1-2 as indicated by alleles A, B, C, or D.