1. Polisetti N, Islam MM, Griffith M. The artificial cornea. In: Walker JM, Ed. Methods in Molecular Biology. Vol 10. New York: Humana Press, 2013. 45–52
2. Wong TY. Corneal and external eye diseases. In: Wong TY, Voon LW, Eds. The Ophthalmology Examinations Review. Singapore: World Scientific Publishing, 2001. 87–140
3. Li X, Wang L, Wei Q. Ophthalmology, 2012, 119: 1712
4. World Health Organization. Prevention of blindness and visual impairment. Priority Eye Diseases-corneal Opacities. http://www.who.int/mediacentre/factsheets/fs230/en/, 2012, 2013
5. Whitcher JP, Srinivasan M, Upadhyay MP. B World Health Organ, 2001, 79: 214–221