Ordering Contact Lenses Without A Prescription

contact lenses
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
(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

prescription
An instruction written by a medical practitioner that authorizes a patient to be provided a medicine or treatment
prescription(a): available only with a doctor's written prescription; "a prescription drug"
written instructions for an optician on the lenses for a given person
directions prescribed beforehand; the action of prescribing authoritative rules or directions; "I tried to follow her prescription for success"
The action of prescribing a medicine or treatment
A medicine or remedy that is prescribed

ordering
order: the act of putting things in a sequential arrangement; "there were mistakes in the ordering of items on the list"
Continually tell someone in an overbearing way what to do
logical or comprehensible arrangement of separate elements; "we shall consider these questions in the inverse order of their presentation"
(ordered) having a systematic arrangement; especially having elements succeeding in order according to rule; "an ordered sequence"
Give an authoritative direction or instruction to do something
Command (something) to be done or (someone) to be treated in a particular way