Usually there is atmospheric allergy. Please try to identify the cause or get atmospheric allergy test done.
You may use olopatadine eye drops 2to3 times and trehalube 2to3 times daily and rub ocupol d's eye oint twice daily on lids.
Are you a regular computer user if so it might be computer vision syndrome please use lubricant eye drops regularly
Next Steps
Follow 20.20.formula ie close your eyes for 20seconds after every after every 20minutes.keep proper distance between eyes and screen wash your eyes with freshwater frequently and don't sit facing towards a/c or blowers consume lots of fresh fruit and vegetables .