Name	Info	Provider	Link
Cataract	free resource	MedlinePlus Health Information	https://medlineplus.gov/cataract.html
Free full Text at ORBi	free resource	ORBi (University of Liege)	https://hdl.handle.net/2268/243452
	subscription/membership/fee required	Georg Thieme Verlag Stuttgart, New York	https://www.thieme-connect.com/DOI/DOI?10.1055/a-0810-0302