ker·​a·​ti·​tis | \ˌker-ə-ˈtī-təs \
plural keratitides\ˌker-​ə-​ˈti-​tə-​ˌdēz \

Definition of keratitis 

: inflammation of the cornea of the eye

Examples of keratitis in a Sentence

Recent Examples on the Web

Over the past seven years, cases of an infection of the cornea, called Acanthamoeba keratitis, have nearly tripled among people who wear contact lenses in southeast England, CNN reports. Bartie Scott, Teen Vogue, "A Rare Eye Infection Is Spreading Among Contact Lens Wearers in the U.K.," 21 Sep. 2018 Superficial corneal ulcers will cause keratitis, a condition in which the eye becomes inflamed. Carolyn L. Todd, SELF, "'Today' Anchor Craig Melvin Got a Corneal Ulcer From Sleeping in His Contacts," 20 Sep. 2018 Among other symptoms, keratitis can cause pain, redness, tearing or discharge, sensitivity to light, and blurry vision, per the Mayo Clinic. Korin Miller, SELF, "6 Weird Reasons Your Vision Is Blurry," 4 May 2018 These kinds of mistakes open you up to issues like keratitis, an irritating inflammation of your corneas that can cause scratchiness, pain, blurry vision, and other symptoms. Korin Miller, SELF, "7 Things That Can Cause Irritated, Scratchy Eyes," 29 June 2018 Letting keratitis go can cause permanent damage that can impact your vision, the Mayo Clinic says. Korin Miller, SELF, "This Is When to See a Doctor About Eye Pain ASAP," 19 June 2018 The organization specifically highlights three eye conditions that people with eyelid eczema should have on their radar: pink eye, keratitis, and keratoconus. Korin Miller, SELF, "Here’s Exactly What to Do About Eczema on Your Eyelid," 3 July 2018 Proper keratitis treatment really depends on the cause. Korin Miller, SELF, "9 Health Issues That Can Cause Sensitivity to Light," 5 June 2018 One of those is acanthamoeba, a parasite that can live in lakes and oceans and cause a rare infection called acanthamoeba keratitis. Korin Miller, SELF, "6 Simple Ways to Take Better Care of Your Eyes," 1 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'keratitis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of keratitis

1858, in the meaning defined above

History and Etymology for keratitis

probably borrowed from French kératite, from Greek kerat-, kéras "horn" + French -ite -itis — more at kerato-

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Statistics for keratitis

Last Updated

6 Dec 2018

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Time Traveler for keratitis

The first known use of keratitis was in 1858

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More Definitions for keratitis


ker·​a·​ti·​tis | \ˌker-ə-ˈtīt-əs \
plural keratitides\-​ˈtit-​ə-​ˌdēz \

Medical Definition of keratitis 

: 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 keratoconjunctivitis

More from Merriam-Webster on keratitis

Rhyming Dictionary: Words that rhyme with keratitis Encyclopedia article about keratitis

Comments on keratitis

What made you want to look up keratitis? Please tell us where you read or heard it (including the quote, if possible).


to make faulty or ineffective

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