Symptom Information: Sort according to HPO 

1
 (HPO:0000505) Visual impairment 297 / 7739
2
 (HPO:0007642) Congenital stationary night blindness 16 / 7739
3
 (OMIM) Loss of night vision 1 / 7739
4
 (HPO:0001417) X-linked inheritance 173 / 7739
5
 (HPO:0001425) Heterogeneous 132 / 7739
6
 (HPO:0007663) Reduced visual acuity 100 / 7739