One of the greatest enemies of our eyes is the sun. Just like the skin, eyes are damaged by UV rays coming from the sun, whether it is overcast or a clear and sunny day. Sunglasses should always be warn in daylight hours when you are outside and you need to be sure that the sunglasses you choose offer UV ray protection. There are many sunglasses sold which are just tinted glass and do not really protect your eyes, they simply offer shade from the brightness. Check the label on your sunglasses before you buy them and be sure to wear them.
Reading , working on the computer and watching television really can tire your eye. When you are doing any of these things which require staring at one place for a long time, it is important to take frequent brakes and look at things farther away for a bit, and look around from time to time to offer your eyes a break and minimize fatigue.