American Optometric Association website. Available at:
Accessed December 28, 2012.
Chalazion. American Academy of Ophthalmology EyeSmart website. Available at:
http://www.geteyesmart.org/eyesmart/diseases/chalazion-stye.cfm. Accessed December 28, 2012.
Chalazion. EBSCO DynaMed website. Available at:
https://dynamed.ebscohost.com/about/about-us. Updated December 22, 2011. Accessed December 28, 2012.
American Academy of Family Physicians
American Academy of Ophthalmology
National Eye Institute
Canadian Association of Optometrists
Canadian Health Network