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
Jamison developed acanthamoeba keratitis in both eyes after wearing her contacts while showering in the Dominican Republic in May.
—
Kristen Rogers, CNN Money, 10 Jan. 2026
About 90% of Acanthamoeba keratitis cases occur in contact lens wearers, says Dr. Saba Al-Hashimi, an assistant professor of ophthalmology in the cornea division at UCLA’s Stein Eye Institute.
—Holly Burns, Time, 23 Oct. 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
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Kristen Rogers, CNN Money, 10 Jan. 2026
About 90% of Acanthamoeba keratitis cases occur in contact lens wearers, says Dr. Saba Al-Hashimi, an assistant professor of ophthalmology in the cornea division at UCLA’s Stein Eye Institute.
—Holly Burns, Time, 23 Oct. 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
See All Example Sentences for keratitis
Cite this Entry
“Keratitis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/keratitis. Accessed 28 Jan. 2026.
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
