contact lens

Học thuật
Thân thiện
contact lens

She carefully places a contact lens onto her eye.

Definition
  1. Noun:
    • A thin, curved optical device: A small, transparent lens made of glass or plastic, designed to be placed directly on the surface of the eye's cornea.
    • Purpose: Its primary functions are to correct refractive errors of vision (such as nearsightedness, farsightedness, or astigmatism) or to deliver medication to the eye.
Usage Examples
  • Noun:
    • She wears contact lenses instead of glasses.
    • My contact lens fell out while I was swimming.
    • The doctor prescribed medicated contact lenses for the infection.
Advanced Usage
  • "To be in contacts": An informal phrase meaning to be wearing contact lenses.
    • I can't see the board; I'm not in my contacts today.
  • "Hard/Soft contact lens": Refers to the material and rigidity of the lens.
    • Soft contact lenses are generally more comfortable than hard ones.
Variants and Related Words
  • Contacts (n, informal): A common shortened form of "contact lenses."
    • I need to put my contacts in.
  • Lens (n): The general term for a piece of glass or other transparent material with curved sides for concentrating or dispersing light rays.
  • Cornea (n): The transparent layer forming the front of the eye, which the contact lens rests upon.
Synonyms
  • Corrective lens: A lens designed to improve vision.
  • Ophthalmic lens: A lens related to the eye and vision.
Related Phrases
  • Contact lens solution: The sterile liquid used for cleaning, rinsing, and storing contact lenses.
    • Don't forget to pack your contact lens solution for the trip.
  • Contact lens case: A small container for storing contact lenses in solution.
    • Always replace your contact lens case every three months.
Notes on Meaning
  • The term specifically refers to the lens that makes direct contact with the eye, distinguishing it from eyeglasses.
  • While primarily for vision correction, specialized contact lenses can also be used for cosmetic purposes (to change eye color) or therapeutic purposes (to deliver drugs).
contact lens

She carefully places a contact lens onto her eye.

Noun
  1. a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication

Từ đồng nghĩa