How to choose circle lenses?
Diameters of circle lenses:
14.2 mm — without enlarging effect;
14.2-14.3 mm — natural enlarging effect;
14.5 mm — well noticeable and at the same time quite natural enlarging effect;
14.7–15.0 mm — very noticeable enlarging effect, "dolly eyes".
We advise you not to choose circle lens with the biggest diameters the first time, because they aren`t suited for everyone and you will not get the effect which you expected.
NB: Korean big lenses with dark tones, lenses with a bright and noticeable print (ex., a "flower" on Water Fairy), and also with a dark/black limb (a dark strip on a circle of contact lens) looks visually bigger on your eyes. For example, circle lenses with a diameter of 14.5 mm can look like 15-16 mm ones.
Also pay attention that a print diameter of ordinary color lenses, as well as a diameter of an iris is ~13.8 mm, while the circle lens print very often covers a lens completely (i.e. the print diameter is equal to the whole lens surface).
Can circle lenses have a diameter of more than 15 mm?
There are no circle lens with a diameter of more than 15 mm. Mini-scleral lenses have a diameter 17 mm. They cover almost all of the visible eye surface, they are not very comfortable, and it`s recommended not to wear them more than 3 hours a day. The scleral lenses ("for the whole eye") have a diameter 22 mm.
Some manufacturers or advertisers deceptively claim to have diameters of 16 mm, 18 mm and even 21 mm whereas the real ones are actually 14.5 or 14.7 mm. As mentioned, some circle lenses with a noticeable print or a dark limbal ring look like they have a bigger diameter. Before you purchase thise lenses, we recommend that you pay careful attention not only to the lenses' diameter, but also of the photos of these lenses in the eyes and customers reviews.
How to choose power and the base curve
What is a diopter? Diopter is a unit of measurement of the contact lenses optical power. If you don't know what a diopter is, most likely, you have good eyesight, and in this case you need zero (plano) diopters (-0.00 for both eyes). If you don't see very well, but you don’t know your diopters yet, you also can take plano lenses or visit an ophthalmologist.
Now let's say some words about the curvature. Why is it necessary to select? Lenses are put on the cornea, and therefore it has to match its shape in a most precise way. That's why all contacts have a certain radius of curvature. An ophthalmologist also can tell which radius of curvature is suitable for you. It isn’t bad if the curvature radius of your eyes differs from the contacts curvature radius on 0.1-0.2 mm, so if your curvature radius is 8.8, you can wear colored contacts with radius of curvature either 8.6 or 8.9.