am·au·ro·sis | \ˌa-mȯ-ˈrō-səs \
plural amauroses\-ˌsēz \

Definition of amaurosis 

: partial or complete loss of sight occurring especially without an externally perceptible change in the eye

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Other Words from amaurosis

amaurotic \-ˈrä-tik \ adjective

Examples of amaurosis in a Sentence

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But Leber congenital amaurosis is a progressive disease and with no treatment, Creed could one day be completely blind. Naseem S. Miller,, "Mount Dora boy among first to receive approved gene therapy drug for eye disease," 23 Mar. 2018 Luxturna was designed to address the RPE65 genetic mutation — in the best cases, permanently — for patients who have RPE65-associated retinitis pigmentosa or leber congenital amaurosis. Julia Belluz, Vox, "Doctors just used a brand new gene therapy to try to save a child’s vision," 22 Mar. 2018 The boy, Creed Pettit, has a rare retinal disease called Leber congenital amaurosis. Kate Sheridan, Newsweek, "Blind Boy Might Be Able to See Again After New Breakthrough Gene Therapy Surgery," 21 Mar. 2018 Spark’s therapy is for Leber congenital amaurosis, a defect in a gene called RPE65. Linda Loyd,, "FDA approves Spark's gene therapy for rare blindness pioneered at CHOP," 19 Dec. 2017 Eye doctors, parents and patients were unanimous in their support of approving the treatment, which would be aimed at the one in a million children with a specific genetic defect that causes Leber congenital amaurosis, or LCA for short. Maggie Fox, NBC News, "FDA Panel Advises Approval of Gene Therapy for Blinding Disease," 12 Oct. 2017 On Thursday, an FDA advisory panel gave the green light for the therapy, which can improve the vision of people with a rare genetic disorder called Leber's congenital amaurosis (LCA). CBS News, "Why FDA's approval of a gene therapy to treat form of blindness is such a big deal," 12 Oct. 2017 There are actually many kinds of retinal dystrophies, including Leber congenital amaurosis and retinitis pigmentosa. Kate Sheridan, Newsweek, "Gene Therapy: How a New Cure for Blindness Reverses Retinal Dystrophy," 12 Oct. 2017 Children with the dysfunctional gene often are diagnosed at an early age with disorders such as Leber congenital amaurosis or retinitis pigmentosa. Laurie Mcginley, Washington Post, "FDA advisers urge approval for first gene therapy for inherited disease," 12 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'amaurosis.' 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 amaurosis

circa 1657, in the meaning defined above

History and Etymology for amaurosis

New Latin, from Greek amaurōsis, literally, dimming, from amauroun to dim, from amauros dim

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Time Traveler for amaurosis

The first known use of amaurosis was circa 1657

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am·au·ro·sis | \ˌam-ȯ-ˈrō-səs \
plural amauroses\-ˌsēz \

Medical Definition of amaurosis 

: partial or complete loss of sight occurring especially without an externally perceptible change in the eye

Other Words from amaurosis

amaurotic \-ˈrät-ik \ adjective

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