1. American Academy of Ophthalmology, Ophthalmic News and Education Network,2003
2. Chronic blepharitis: classification and mechanisms;McCulley,1981
3. Differentiation of chronic blepharitis by meibomian function: a new classification system;Mathers;Ophthalmology,1990
4. Duane's Clinical Ophthalmology;Tasman,2000
5. The contribution of meibomian disease to dry eye;Bron;Ocul Suf,2004