Mainly in Japan, Korea, Taiwan and China eye lens enlargement is pretty popular among females. Generally these lens are referred to as "circle lens". These lenses are used for cosmetic reasons, some say they tend to give off a doll like look, or soften facial features or even reference to look like anime characters. Here is an example of an anime character:
Personally prefer Geo medical brand lenses. I got both the Geo deep blue and Geo 3 tone green from lensvillage.com Here is my review on the two lenses:
Geo Tri Color Green Lens CM-903 a.k.a. "Berry Berry Chessy"
I can't feel them on. I can wear them for hours on end with no problem.
The most I liked about them is that they look completely natural.
Geo Color Nine 9 Deep Blue Lenses AN-A42
Comfortableness of a ★★★☆☆
I defiantly can feel them in my inner eye lid, which can get a bit annoying.
The most I can wear them for about an hour. I constantly needed to use eye drops.