Kanski and Bowling. "Clinical Ophtalmology a systematic approach."
Kapittel 1-7: Eyelids. Lacrimal Drainage System. Orbit. Dry Eye Disorders. Conjunctiva. Cornea. Corneal and Refractive Surgery. Kapittel 9: Lens.
American Academy of Ophtalmology. "Basic and Clinical Science Course".
Section 7: Orbit, Eyelids and Lacrimal System.
Section 8: External Disease and Cornea.
Section 11: Lens and Cataract.
Section 13: Refractive Surgery.