Symptom Information: Sort according to HPO 

	Symptom Information	Symptom	Abundance	Frequency	Pubmed	Source	DB Freq
1	(HPO:0000505)	Visual impairment	rare [HPO:skoehler]				297 / 7739
2	(HPO:0000568)	Microphthalmia					183 / 7739
3	(HPO:0007663)	Reduced visual acuity	rare [HPO:skoehler]				100 / 7739
4	(HPO:0012426)	Optic disc drusen	rare [HPO:skoehler]				2 / 7739