With these simple practices, you can reduce, or even prevent the effects of computer vision syndrome:
Make sure the lighting in the room is comfortable on the eyes, and prevents you from staring into glare on the computer screen
Position the digital display so that your head is in a naturally comfortable position while using
Take breaks. A few minutes away from the computer can go a long way when it comes to your eyes. Think of it similarly to the way you take stretch breaks for your arms and back.
Make sure your seat is comfortable. A comfortable chair with support for your neck and back will help you avoid neck and shoulder strain commonly associated with computer vision syndrome.