Symptom Information: Sort according to HPO 

	Symptom Information	Symptom	Abundance	Frequency	Pubmed	Source	DB Freq
1	(OMIM)	Vision limited to detection of hand motion					1 / 7739
2	(OMIM)	Extinguished responses on electroretinography					1 / 7739
3	(HPO:0000007)	Autosomal recessive inheritance					2538 / 7739