Akademik

gas permeable lens
gas permeable lens UK US noun [countable] [singular gas permeable lens plural gas permeable lenses]
a type of contact lens (=a piece of plastic you wear on your eye so that you can see clearly) that allows air to reach your eye
Thesaurus: glasses, lenses and contact lenseshyponym eye and parts of the eyemeronym

Useful english dictionary. 2012.