- It might take time for your eyes to adjust. - No matter how good the screen resolution is, you'll see pixelated reality rendered. Luckily Mac extended screen resolution is quite impressive and better than the live video of the room around you. - Keep your eyes healthy, try to remember to take off the device often and go check your eye sight, especially after first few months. - It might not work for you like it works for me (YMMV).