Opaque Contact Lenses Blind

contact lenses
A thin plastic lens placed directly on the surface of the eye to correct visual defects
(contact lens) contact: a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication
(contact lens) A thin lens, made of flexible or rigid plastic, that is placed directly on to the eye to correct vision, used as an alternative to spectacles, or, if coloured, to change one's eye color cosmetically
(Contact lens) A small plastic disc containing an optical correction that is worn directly on the cornea as a substitute for eyeglasses.

opaque
(esp. of language) Hard or impossible to understand; unfathomable
not clearly understood or expressed
not transmitting or reflecting light or radiant energy; impenetrable to sight; "opaque windows of the jail"; "opaque to X-rays"
Not able to be seen through; not transparent
(opaquely) in an opaque manner; "he referred opaquely to her recent past"

blind
Deprive (someone) of understanding, judgment, or perception
Confuse or overawe someone with something difficult to understand
render unable to see
people who have severe visual impairments, considered as a group; "he spent hours reading to the blind"
unable to see; "a person is blind to the extent that he must devise alternative techniques to do efficiently those things he would do with sight if he had normal vision"--Kenneth Jernigan
Cause (someone) to be unable to see, permanently or temporarily