One of them is the soft lenses that allow oxygen to pass through the lens.You will find that the market sells different types of contact lenses. Before buying, check the expiration date of the product. Within a short time, it has become an exceptional substitute for sunglasses. It has traveled a long way from being a vision aid tool to an essential fashion trend object. Avoid sellers or retailers that sell cheap and false lenses. Before you go shopping for contact lenses, make sure you have sufficient knowledge about its corrective powers, colors and their effect on your overall appearance. You need to keep some things in mind when using contact lenses: You should not sleep with contact lenses.Advantages of using Halloween contact lensesHalloween contact lenses help people with larger eyes to create a sense of beauty and confidence. It became an obsession among youngsters. Previously, they were used only to correct the impaired perception. But now, times have changed.Halloween contact lenses come in different fashion and colors due to its widespread use among young people.