hard-lens

hard lens

noun
a contact lens of rigid plastic or silicon, exerting light pressure on the cornea of the eye, used for correcting various vision problems including astigmatism.
Compare soft lens.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
hard lens
 
n
gas-permeable lens Compare soft lens a rigid plastic lens which floats on the layer of tears in front of the cornea, worn to correct defects of vision

Collins English Dictionary - Complete & Unabridged 10th Edition
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