Artificial tears
Artificial Tears
Artificial tears (/ɑːrˈtɪfɪʃəl tɪərz/) are lubricant eye drops used to treat the dryness and irritation associated with deficient tear production in keratoconjunctivitis sicca (dry eyes). They are also used to moisten contact lenses and in eye examinations.
Etymology
The term "artificial tears" is derived from the fact that these solutions aim to mimic the natural moisture ("tears") of the human eye.
Composition
Artificial tears are usually composed of several ingredients, including carboxymethylcellulose, hydroxypropyl methylcellulose, polyethylene glycol, and hyaluronic acid. These ingredients work together to provide moisture and lubrication to the surface of the eye.
Usage
Artificial tears are used to relieve the symptoms of dry eyes, such as burning, itching, and feeling as if something is in the eye. They can also be used to moisten contact lenses and during eye examinations.
Related Terms
- Keratoconjunctivitis sicca: A condition characterized by dry eyes due to decreased tear production or increased tear evaporation.
- Lubricant eye drops: Another term for artificial tears.
- Carboxymethylcellulose: A common ingredient in artificial tears that provides moisture and lubrication.
- Hydroxypropyl methylcellulose: A common ingredient in artificial tears that provides moisture and lubrication.
- Polyethylene glycol: A common ingredient in artificial tears that provides moisture and lubrication.
- Hyaluronic acid: A common ingredient in artificial tears that provides moisture and lubrication.
External links
- Medical encyclopedia article on Artificial tears
- Wikipedia's article - Artificial tears
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