Symptom Information: Sort according to HPO 

	Symptom Information	Symptom	Abundance	Frequency	Pubmed	Source	DB Freq
1	(HPO:0000510)	Rod-cone dystrophy					266 / 7739
2	(HPO:0000662)	Nyctalopia					92 / 7739
3	(HPO:0001133)	Constriction of peripheral visual field					33 / 7739
4	(OMIM)	Fundal pigment lumps					1 / 7739