NOT SOLD IN THE US, and the non-UV twin of the lens now sold as eyedia soft 55. Clearlab still catalogues it, under its carton name Clear 55A, and flags it explicitly as unavailable in the United States, so it is a current product elsewhere rather than a withdrawn one. Clearlab published the two side by side and the UV blocker is the only stated difference between them, which makes the pair unusually informative: identical material, water content, refractive index of 1.42 and specific gravity of 1.06, yet this one measures 23.43 and the UV version 24.26. A UV absorber, which is no part of the adopted material name, moves measured oxygen permeability. That is the clearest mechanism in the whole Clearlab set for why two lenses can share a material name and not share a Dk. THE GEOMETRY HERE IS THE CLEARED ENVELOPE, NOT A STOCK LIST: Clearlab never published stocked values for this lens on a page that survives, so the base curve and diameter are ranges from its US package insert. uvBlocking is recorded as none rather than left blank, which is the opposite of how the rest of this collection treats silence, because here the absence IS the product: it is the version sold specifically without the blocker.
