Symptom Information: Sort according to HPO 

	Symptom Information	Symptom	Abundance	Frequency	Pubmed	Source	DB Freq
1	(HPO:0007642)	Congenital stationary night blindness					16 / 7739
2	(OMIM)	Normal fundi					1 / 7739
3	(OMIM)	Mutant rhodopsin or beta subunit of retinal rod cGMP phosphodiesterase					1 / 7739