Where to buy contact lenses?

[emma_llew]

Hi guys... where on the internet can I buy BLOCK WHITE contact lenses that are 12 or 13mm in diameter?
They only seem to sell 14mm.
Thanks for your help.

[york310]

Most soft contact lenses are about 14mm in size so they fit over the cornea fully in all posituons of gaze without the edge rubbing at the limbus (where the cornea meets the white sclera). I very much doubt you'll find smaller ones unless they are tailor made and expensive. Why do you want a smaller size?

[emma_llew]

Because my measurement is 12.00mm. My eyes are too small for the 14mm ones.

[york310]

The average size of the human cornea is 12mm and the soft contact lens needs to sit approximately 2mm over limbus on all sides which its why they are usually about 14mm in diameter.
The overall fit of a lens is not just about the diameter of it but more often about the curvature of it although with most contact lens manufacturers now it is a one size fits all approach.
If you do have small cornea it can be often called microcornea but this is usually with cornea of less than 10mm diameter and be associated with other issues.
If you really need this lens size them specialist suppliers may be available via your optometrist or eye specialist.