Are you a regular computer user if so it might be computer vision syndrome. Please put some lubricant eye drops e.g. teardrops eye drop 3to4 times daily and rub ocupol dx eye oint to be rubbed twice daily on lids
Next Steps
Follow 20.20.formula ie close your eyes for 20.seconds after every 20.minutes. keep proper distance between eyes and screen ie approx 20.to 24 inches.wash your eyes with freshwater frequently and don't sit facing towards ac or blowers. Do cold compresses with ice. And consume lot of fresh fruit and vegetables