Illusions Opaque Contact Lenses

contact lenses
(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
A thin plastic lens placed directly on the surface of the eye to correct visual defects
(Contact lens) A small plastic disc containing an optical correction that is worn directly on the cornea as a substitute for eyeglasses.
(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

illusions
A thing that is or is likely to be wrongly perceived or interpreted by the senses
(illusion) something many people believe that is false; "they have the illusion that I am very wealthy"
(illusion) delusion: the act of deluding; deception by creating illusory ideas
A deceptive appearance or impression
(illusion) an erroneous mental representation
A false idea or belief

opaque
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
not clearly understood or expressed
(esp. of language) Hard or impossible to understand; unfathomable
(opaquely) in an opaque manner; "he referred opaquely to her recent past"