How To Put In Toric Contact Lenses

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.

how to
Practical advice on a particular subject; that gives advice or instruction on a particular topic
(How To’s) Multi-Speed Animations
Providing detailed and practical advice
A how-to or a how to is an informal, often short, description of how to accomplish some specific task. A how-to is usually meant to help non-experts, may leave out details that are only important to experts, and may also be greatly simplified from an overall discussion of the topic.

put in
insert: introduce; "Insert your ticket here"
chime in: break into a conversation; "her husband always chimes in, even when he is not involved in the conversation"
store: keep or lay aside for future use; "store grain for the winter"; "The bear stores fat for the period of hibernation when he doesn't eat"