Symptom Information: Sort according to HPO 

	Symptom Information	Symptom	Abundance	Frequency	Pubmed	Source	DB Freq
1	(HPO:0000512)	Abnormal electroretinogram	Frequent [HPO:probinson]		17924349	IBIS	61 / 7739
2	(HPO:0001123)	Visual field defect	Frequent [HPO:probinson]		17924349	IBIS	30 / 7739
3	(HPO:0007843)	Attenuation of retinal blood vessels			17924349	IBIS	25 / 7739
4	(HPO:0000006)	Autosomal dominant inheritance					2518 / 7739
5	(HPO:0000510)	Rod-cone dystrophy					266 / 7739
6	(HPO:0007722)	Retinal pigment epithelial atrophy					10 / 7739