If you are new to Circle Lenses aka Circle Lens Contacts aka big eyes contact lenses they are soft contacts that are larger in diameter than 'normal' clear or colored contact lenses and hence give the appearance of larger and usually brighter eyes. They were created in South Korea several years ago and have become a fashion staple in Asia. In fact the Korean Herald estimated that Circle Lenses represented 30% of the entire contact lenses market in South Korea. Many celebrities in China and Japan have sported the doll-eye circle lens look and have had a huge impact on spreading this new cosmetic lenses fashion trend.
In the USA most large media outlets ran stories on the circle lenses phenomenon after Lady Gaga debuted circle lenses (or perhaps just computerized special effects) in her Bad Romance video and gave her credit for making them popular in America. Others credit Michelle Phan and her viral YouTube video showing young girls how to get the Lady Gaga big eye look by wearing a wig, applying eye makeup and topping it off with a fresh pair of color circle lenses contacts.
Although this author agrees that Stefani (that's Lady Gaga's real name) and Michelle have had a big influence in spreading the circle lens style he also feels that it's just a matter of time before these cosmetic lenses become common place in most modern parts of the world. They are hugely popular among teen girls and those young single adult females who are into the night club scene. This trend of dressing up the eyes isn't uncommon as Halloween contact lenses are already popular among vampire fanatics and for average people around Halloween of course for completing the ultimate costume.
In today's relatively small global world of communications and grass root marketing and self published YouTube videos any style or fashion that has a strong following in one part of the world is likely to migrate much more quickly than even a decade ago when Internet use was perhaps not a part of daily life. Some fashions or styles may be fads and others may not stick due to cultural differences but for young woman the appeal to enhance their eye color and create the illusion of larger, sexier eyes seems to be universal and transcend cultures.
Just because the US FDA hasn't yet approved them does that make them more dangerous than regular contacts or is the real danger the fact that because our FDA hasn't approved them young woman and girls in the US are choosing to buy them online without a prescription? The KFDA, Korean Food and Drug Administration, that cares for the safety and health of the citizens of South Korea has approved these lenses, are they wrong? Would a government body approve something that was dangerous? Should the FDA approve Circle Lenses and let our companies make and distribute these lenses and allow Doctors to properly fit them? Circle Lens contacts will be worn and purchased by young US woman even without approval.
Perhaps the best and safest approach the US FDA could pursue would be to encourage a large US based manufacturer to create safe circle lenses and expedite their approval so that US woman could purchase these lenses in the states and get them properly fitted and receive a valid prescription. Unless the FDA is already reviewing these lenses (and it's unlikely given that the FDA authority interviewed by the New York Times in 2010 admitted she didn't even know what circle lenses were) any future approval request of circle lense contacts in the states is likely to move at a bureaucratic snails pace typical of FDA approvals for medical devices which is the classification that all contact lenses sold in the US are a part of. The very same lenses can be sold in other countries without a current prescription.
Until such time as FDA approval of Circle Lenses becomes a reality we can recommend one specific pair of Circle Lens contacts that is FDA approved and available from several popular online contact lenses retailers, you just need to know what to ask for... the short answer is Allure contacts with a black limbal or circle very visible at the edges of the contact lens creating a very distinct outline of the Iris.