Unilateral eye squeezing may be caused by eyelid tremor, eye inflammation, eye fatigue and other conditions. 1. Eyelid nystagmus: mainly manifested as involuntary fluttering or twitching of the eyelids. Generally, eyelid fluttering occurs mostly in the upper eyelid and sometimes in the lower eyelid, which is not controlled by human thinking and conscious activities. Conjunctivitis can cause blinking symptoms, which can trigger tics, and some children may have eye squeezing at the beginning of the disease. 2. Eye inflammation: the presence of local irritating factors in the eyes, such as conjunctivitis, keratitis, corneal foreign body, inverted eyelashes, etc., leading to itching of the eyes, and patients often squeeze their eyes to relieve itching. 3. Eye fatigue: the eyes do not get enough rest for a long time, so the secretion of tears will be relatively reduced, making the eyes dry, so patients squeeze the eyes to relieve eye fatigue. Unilateral squeezing eyes, if the rest can not be relieved, and accompanied by other discomforts, it is recommended to go to the hospital in a timely manner, to identify the cause and follow the doctor’s instructions for treatment.