Fig. 22. Dominant optic atrophy. A. Family H pedigree. Proposita (P): 20/70 (6/21) and 20/100 (6/30) acuity and tritanopia. Father (f): 20/40 (6/12) and 20/50 (6/15) acuity and mild unclassified dyschromatopsia. Grandmother (g): 20/30 (6/9) and 20/40 (6/12) acuity and tritanopia. Cousin (c): 20/70 and 20/100 acuity and undetermined color defect. Arrows indicate persons examined. Other family members (stippling) have reportedly poor vision. B. Visual field in dominant optic atrophy. Note cecocentral scotomas and superotemporal depression of internal isopters I-2,1, which simulates the bitemporal pattern of chiasmal interference.