The inability to close the eyes is clinically known as incomplete eyelid closure, which refers to the inability of the upper and lower eyelids to close completely, resulting in part of the cornea or sclera being exposed. The causes of incomplete eyelid closure are mainly in the following aspects: 1, facial nerve palsy, facial nerve innervates the orbicularis oculi muscle and Muller’s muscle, facial nerve palsy orbicularis oculi muscle paralysis when the lower eyelid is flaccid and drooping, resulting in part of the cornea or the sclera is exposed to the outside, early on, you can apply systemic nutritive nerve medication, if the effect is not good, you need to do surgery to correct the problem if necessary; 2, severe eyelid trauma after suturing surgery Eyelid scar pulling, resulting in eyelid ectropion, causing incomplete eyelid closure, early can be localized hot compresses to relieve scar pulling, the effect is not good need to do 2 plastic surgery to correct the lid entropion; 3, thyroid synophthalmos, patients with thyroid-related eye disease, posterior globe tissue edema, so that the whole eyeball protrudes forward outside the eyelid fissure, resulting in the eyelid can not be completely closed; first of all, we need to actively treat the primary pathology, and if necessary, to do orbital decompression surgery 4. Children with congenital glaucoma have elevated intraocular pressure and enlarged eyeballs, which make the size of eyeballs and eyelids disproportionate and cause incomplete closure, and they should be actively treated by lowering intraocular pressure; 5. Some people have eyes that cannot be closed completely when they sleep in physiological state, which is a physiological phenomenon, and it will not expose the cornea or cause keratitis, and there is no need for special treatment.