Lady Gaga and “circle” contact lenses.

The use of cosmetic contact lenses that extend beyond the iris giving the appearance of larger eyes has come into fashion, thanks to Lady Gaga, who displayed the look in her “Bad Romance” music video.

But these drugstore circle lenses—which come in various colors like violet and teal—can cause a host of eye problems. The American Academy of Ophthalmology issued a warning on Wednesday against the lenses stating that “inflammation and pain can occur from improperly fitted, over-the-counter lenses and lead to more serious problems, including corneal abrasions and blinding infections.” Though illegal in the U.S., they’re still widely available for purchase over the internet, if you don’t mind putting your vision at risk.