Circle contact lenses, also known as "big-eye contact lenses" and "circle lenses," are cosmetic contact lenses that make the eye's iris appear larger. They have become a trend in Japan, South Korea, and China, and are largely produced in these countries.
These lenses, which extend an additional two millimetres beyond the diameter of most people’s irises and help to create a “doe-eyed”look, have been hugely popular with the Asian population for a couple of years now.
Now that circle lenses have gone mainstream, they are turning up in North America.
The sale of these lenses is mostly over the Internet. Because they're sold over the internet, there's relatively little regulation to ensure the contacts are made safely. Vendors selling circle lenses online are putting consumers at risk of eye injuries by providing these lenses without a valid prescription or consultation from an eye professional.
Ill-fitting contact lenses could deprive the eye of oxygen and cause serious vision problems. If the contacts don't fit properly -- too tight or too loose -- they can scratch the cornea, which can cause extreme pain and could lead to infection.
As with any contact lenses, always consult your optometrist to ensure they are the proper material and fit for your eyes.