Costume contact lenses can cause eye problems
The Kansas City Star has a helpful article warning about the dangers of costume contact lenses. According to reporter Paul Wenske, all contact lenses – even decorative ones that do not correct eye problems – require a prescription; businesses that sell them without a prescription (often at beauty salons and flea markets) are violating the law.
Risks associated with lenses include infection, allergic reaction, and scratches – conditions that could cause permanent damage if not diagnosed and treated. To avoid these problems, the article recommends getting a prescription to buy your lenses from a legitimate vendor.