Table 5

Increasing incidence of fundus, ERG, and VEP abnormalities with age

Age (years)Fundus abnormalitiesERGVEP
nonemildseverenormalconecone rodnormalabnormal
<154/13 (31%)9/13 (69%)03/9 (33%)4/9 (44%)2/9 (22%)6/13 (46%)7/13 (54%)
15–301/5 (20%)2/5 (40%)2/5 (40%)1/5 (20%)1/5 (20%)3/5 (60%)2/6 (33%)4/6 (67%)
>3002/5 (40%)3/5 (60%)0/4 (0%)3/4 (75%)1/4 (25%)1/5 (20%)4/5 (80%)