Name	Info	Provider	Link
	free resource	Korean Academy of Medical Sciences	https://jkms.org/DOIx.php?id=10.3346/jkms.2011.26.7.938
Eye Diseases	free resource	MedlinePlus Health Information	https://medlineplus.gov/eyediseases.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21738349/
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:21738349
Eye Diseases	free resource	MedlinePlus Consumer Health Information	https://medlineplus.gov/eyediseases.html