The symptoms correlate with allergic reaction
of the eyes.
This could be seasonal and you may be having similar attacks depending on the exposure to allergen.
Don't worry. Its not a major problem. Keep using the prescribed medications.
Take few precautions when you work with computer/laptop -
1. Keep blinking your eyes voluntarily to avoid dryness.
2. Take breaks in between while you are working.
3. Do not rub your eyes..
Hope your query is answered.