Symptom Information: Sort according to HPO 

	Symptom Information	Symptom	Abundance	Frequency	Pubmed	Source	DB Freq
1	(HPO:0000505)	Visual impairment					297 / 7739
2	(HPO:0000543)	Optic disc pallor	rare [HPO:skoehler]				67 / 7739
3	(HPO:0007663)	Reduced visual acuity					100 / 7739
4	(HPO:0007754)	Macular dystrophy					26 / 7739
5	(HPO:0011504)	Bull's eye maculopathy	rare [HPO:skoehler]				8 / 7739