Wow nobody actually has a proper suggestion. It's simple really.
Your eyes need to be able to look forward; not down on your keyboard level where a laptop monitor is.
1. Try a desktop PC or home theatre PC setup where the keyboard is at elbow level and the monitor is straight ahead.
2. Use a bluetooth keyboard and place the laptop at eye level while the keyboard is where your laptop used to be.
The problem is posture. Laptop use is bad for it.