Symptom Information: Sort according to HPO 

1
(OMIM) Night blindness beginning in early childhood 1 / 7739
2
(OMIM) Funduscopic examination normal 1 / 7739
3
(OMIM) Absent a- and b-waves under scotopic conditions 1 / 7739
4
(OMIM) Normal or mildly reduced cone responses under photopic conditions 1 / 7739
5
(HPO:0000007) Autosomal recessive inheritance 2538 / 7739
6
(HPO:0007642) Congenital stationary night blindness 16 / 7739