If you are working for more than 6 hrs in the computer, you are likely to develop Computer Vision Syndrome (CVS). Always wear glasses when you are reading, writing, typing, texting or any activity which will put your eyes under strain.
Next Steps
You can try Pencil push up exercise. Follow 20-20-20 rule ie., after every 20 minutes of continuour work take a break of 20 seconds or look at something 20 feet away.
Health Tips
Drink plenty of water. and take breaks in between