Name	Info	Provider	Link
Cataract	free resource	MedlinePlus Health Information	https://medlineplus.gov/cataract.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=20412312.ui
	subscription/membership/fee required	Wiley	https://doi.org/10.1111/j.1472-8206.2010.00829.x
Cited by Patents in	free resource	The Lens - Patent Citations Database	https://www.lens.org/lens/search/patent/list?q=reference_cited.nlp.ids.pmid:20412312