If your eyes get blurry when you look at a cell phone, it may be due to a refractive error, dry eye or visual fatigue. 1. Refractive status problem: If there is a refractive status problem, it may be refractive error, mild hyperopia or presbyopia. Depending on the age, the clinical status may be different, mainly manifested as difficulty in seeing, eye fatigue, there will be a blurring of the eyes when looking at the cell phone. 2. Dry eye: If there is dry eye problem, when looking at the cell phone, the blinking frequency may be reduced, the eyes are more dry, the tear film of the eye surface is unstable, and blurring of objects may occur easily. 3. Visual fatigue: visual fatigue is due to the eyes, look close or look away alternately, will be more fatigue, or not so fast adjustment, may be manifested as a look at the cell phone blurred state. If your eyes are blurred when you look at a cell phone, it is recommended that you closely observe your own situation, seek medical attention if necessary, identify the causes, and follow the doctor’s instructions for treatment.