Wearing contact lenses is quite popular today which can make wearers look more attractive and feel more comfortable. However, sometimes it is not that safe to wear contact lenses and contact lens wearers are more likely to suffer from eye irritations. Use of extended wear lenses, sleeping with contact lenses on, rubbing of the lens against, allergic reaction against contact lens solution and other improper wearing of contact lenses are all possible causes of irritation eyes. To solve and reduce these problems, wearers should properly wear contact lenses and pay more attention to personal hygiene. And once getting eye irritations, wearers should go to see an eye doctor as quickly as possible.