1.It is an allergic reaction.Avoid dust or any other cosmetic allergen, wear specs if any and only mandatory screen work
2.Don’t rub your eyes
3.Wash them only twice a day in clean running tap water
4.Cold compresses with ice in a clean handkerchief
5.Keep inclined angle between your eyes and screen, dont forget to blink, take rest for 20 sec after 20 minutes of work and avoid direct contact with air from fan blower AC etc.
Next Steps
Olopatadine 0.1% twice a day for two weeks
Refresh tears thrice a day for two weeks