keratitis
noun
ker·a·ti·tis
ˌker-ə-ˈtī-təs 
plural keratitides
ˌker-ə-ˈti-tə-ˌdēz
: inflammation of the cornea of the eye
Examples of keratitis in a Sentence
Recent Examples on the Web
Research suggests Lyme can cause sudden vision loss, damage to the optic nerve, and neurotrophic keratitis (decreased corneal sensation).
—
Angela Haupt, Time, 18 June 2025
For anyone who’s been lucky enough not to experience it, snow blindness—technically called ultraviolet (UV) keratitis—happens when your corneas are exposed to too much ultraviolet light, which reflects off snow.
—Kristin Canning, SELF, 6 Feb. 2025
Fungus can cause either keratitis—an infection of the outer layer of the eye—or endophthalmitis, an inner eye infection.
—Josh Hammer, Newsweek, 23 Dec. 2024
This can lead to serious eye infections like keratitis, an inflammation of the cornea caused by bacteria or fungi.
—Alyssa Hui-Anderson, Verywell Health, 23 Oct. 2024
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Angela Haupt, Time, 18 June 2025
For anyone who’s been lucky enough not to experience it, snow blindness—technically called ultraviolet (UV) keratitis—happens when your corneas are exposed to too much ultraviolet light, which reflects off snow.
—Kristin Canning, SELF, 6 Feb. 2025
Fungus can cause either keratitis—an infection of the outer layer of the eye—or endophthalmitis, an inner eye infection.
—Josh Hammer, Newsweek, 23 Dec. 2024
This can lead to serious eye infections like keratitis, an inflammation of the cornea caused by bacteria or fungi.
—Alyssa Hui-Anderson, Verywell Health, 23 Oct. 2024
See All Example Sentences for keratitis
Cite this Entry
“Keratitis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/keratitis. Accessed 30 Oct. 2025.
Copy CitationMedical Definition
keratitis
noun
ker·a·ti·tis
ˌker-ə-ˈtīt-əs
plural keratitides
-ˈtit-ə-ˌdēz
: inflammation of the cornea of the eye characterized by burning or smarting, blurring of vision, and sensitiveness to light and caused by infectious or noninfectious agents
called also corneitis
compare keratoconjunctivitisLove words? Need even more definitions?
Merriam-Webster unabridged
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