Ultrasonic Contact Lens Cleaners

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 contact lens (also known simply as a contact) is a corrective, cosmetic, or therapeutic lens usually placed on the cornea of the eye.
A thin plastic lens placed directly on the surface of the eye to correct visual defects
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

ultrasonic
Of or involving sound waves with a frequency above the upper limit of human hearing
supersonic: having frequencies above those of audible sound
(ultrasonically) by ultrasonic means; "the kidney stones were removed ultrasonically"
Beyond (higher in frequency than) the range of sound perceptible to the human ear; with a frequency of 20 kilohertz or higher

cleaners
(cleaning) the act of making something clean; "he gave his shoes a good cleaning"
A person or thing that cleans something, in particular
shop where dry cleaning is done
A person employed to clean the interior of a building
A place of business where clothes and fabrics are dry-cleaned
(cleaner) the operator of dry-cleaning establishment