Styes in the eyes may be caused by central nervous system lesions or systemic diseases, orbital trauma, eye diseases, etc. 1. Central nervous system lesion or systemic disease: it can cause eye muscle movement disorder, for example, hypertension, diabetes mellitus and other vascular diseases in the elderly may lead to eye muscle movement disorder, which may cause paralytic diplopia and stupor in the eyes. 2. Orbital trauma: when the orbital trauma has fracture, it may be accompanied by the insertion of extraocular muscles, which may lead to diplopia and the phenomenon of blurring in the eyes. 3. Eye diseases: cataract, refractive error, strabismus, etc. can also cause diplopia and floaters. There may be other reasons for the double vision, if the symptoms do not get better, it is recommended to go to the hospital in time for examination.