Watching cell phone eye swelling pain is due to daily eye swelling pain and pathological eye swelling pain and other factors. 1. Daily eye swelling and pain: it is caused by long time looking at the cell phone, which belongs to visual fatigue. It is due to the contraction of ciliary muscle, crystal convexity, excessive spasm of ciliary muscle, so it will lead to visual impairment and eye discomfort after using eyes, eye soreness and dryness and other symptoms. 2. Pathological eye swelling and pain: refractive error, myopia, hyperopia, astigmatism and glaucoma and other ophthalmic diseases, without glasses, looking at the cell phone is prone to eye swelling and pain accompanied by decreased visual acuity, soreness and discomfort and other symptoms, if it is glaucoma, it will cause elevated intraocular pressure, visual field loss and other manifestations of the need for early treatment. If you have eye swelling and pain, you should go to the hospital as soon as possible to check your vision and intraocular pressure, and under the guidance of your doctor, you should have an optometry and eye examination for glaucoma.