Eyes play a vital role in our day to day lives and are perhaps the most precious gift we have. This world is visible to us because we are blessed with eyesight. Clear and bright eye sight makes this world a better place to live in. Good eyesight is very important for our daily activities like reading, watching television, internet surfing, driving etc. However, there are many people amongst us who are affected by vision defects and hence are forced to use contact lenses or glasses to have clear vision.