Wednesday, July 01, 2015


Recently, while preparing the databases for use on a web shop, I generated a curious list....

Alphafilcon A, Balafilcon A, Comfilcon A, Delefilcon A, Enfilcon A, Etafilcon A, Galyfilcon A, Hilafilcon B, Hioxifilicon A, Lidofilcon A, Lotrafilcon A, Lotrafilcon B, Methafilcon A, Narafilcon A, Nelfilcon A, Ocufilcon B, Ocufilcon D, Omafilcon A, Phemfilcon A, Senofilcon A, and Stenfilcon A.

For the optometrists among you, you will recognize that these are contact lens material names. I found the fact that everything that ended in filcon (Phil Collins? ;->) had to be more than an accident, and I was right: they follow very specific rules set up by the United States Adopted Names Council.

From my experience with tracking what web users are searching for, there was only one material that was really on my radar: Comfilcon (used in CooperVision products). Checking Google Trends, it's clear why... it's basically the only material that non-opticians know about. What is also curious is that the materials searched for by name are ALL from CooperVision - none of the other manufacturer's materials are known by the general public.

Inline image 1

The one exception to the naming convention is Polymacon, used in some SofLens products. So far, I have not found the reason that this material does not end in "filcon". I'll update this post when I find out.