Research progress of the change of eyelid-marginal tension and its related diseases

Eyelid is one of the most important appendages of the eye,not only forming a barrier to protect the eye ball,but also spreading tears to the cornea and conjunctiva.The eyelid margin refers to the junction area between the eyelid skin and palpebral conjunctiva,the tensional change of which may lead to the blepharal abnormality related to its location and function.In addition to causing some common diseases,e.g.entropion,ectropion,trichiasis,etc,the change of eyelid marginal tension may also be associated with blepharospasm,conjunctivochalasis,conjunctival lymphangiectasia and the floppy of eyelid skin caused by a variety of pathogenesis.This paper summarizes both the native and foreign researches on the measurement methods of eyelid-marginal tension and related ophthalmopathy. Key words: Eyelids ;  eyelid-marginal tension;  blepharospasm ;  conjunctivochalasis