The pain in the unilateral eye when blinking and pressing may be caused by a foreign body, eye trauma, blepharitis, conjunctivitis, glaucoma, etc. The specific analysis is as follows: 1. Eye foreign body: If a foreign body enters the unilateral eye and remains on top of the lid conjunctiva or the conjunctival sac at the corner of the eye, then we blink and the cornea will be stimulated causing pain, in this case use distilled water or saline to rinse off the foreign body; 2. Eye trauma: If the skin at the corner of the eye is ruptured due to unilateral eye trauma, the pain will be caused by pulling on the wound and there will be distension when pressing on the eye. If the skin of the corner of the eye is ruptured by unilateral eye trauma, blinking will cause pain by pulling on the wound, and there will be a painful feeling of swelling when you press on the eye, so you need to go to the hospital to check if there is any injury to the inside of the eye. If the eye is unilateral, there will be a hard nodule in the eyelid at the beginning of the disease, which is painful when pressed. This can be treated with antibiotic eye ointment or, in severe cases, incision and drainage of pus. 4. The conjunctival sac can be flushed with saline as prescribed by the doctor, and antiviral or antibacterial eye drops can be applied locally. For serious patients, systemic anti-infection treatment can be prescribed by the doctor; 5. Glaucoma: If the unilateral eye suffers from glaucoma, conjunctival congestion, tearing, eye pain, eye dryness, vision loss and other symptoms can be treated with medication or surgery as prescribed by the doctor to reduce eye pressure and protect eye function. If there is pain in the unilateral eye when blinking and pressing, it is recommended to seek medical attention to identify the cause for treatment to avoid delaying the condition. Reduce the time spent looking at electronic products, and pay attention to adjusting the light source of the environment around you, not too dark and not too bright.