nystagmus
noun
nys·tag·mus ni-ˈstag-məs 
: involuntary usually rapid movement of the eyeballs occurring normally with dizziness during and after bodily rotation or abnormally following head injury or as a symptom of disease
nystagmic
ni-ˈstag-mik
adjective 
Example Sentences
Recent Examples on the Web Finlay conducted a horizontal gaze nystagmus, a type of field sobriety test, and said Kumar failed four of six measures used to determine if someone is intoxicated, according to the arrest warrant affidavit. 
Jay R. Jordan, Chron, 6 May 2022 Officers performed a horizontal gaze nystagmus, a type of field sobriety test, and said Kumar failed four of six measures used to determine if someone is intoxicated. Jay R. Jordan, Chron, 5 May 2022 Little Johnny [who has low vision and nystagmus] was impressive in this episode. Dan Snierson, EW.com, 6 Apr. 2022 Apl’s life changed, however, when an American lawyer signed up to become his sponsor through the Pearl S. Buck Foundation and in 1986 brought him to Los Angeles with hopes of correcting his nystagmus, defined by the American Optometric Assn. Los Angeles Times, 22 Aug. 2021 With nystagmus, a disability that causes involuntary eye movement, Saylor’s vision with glasses is 20/200 and approximately 20/1400 without. Grant Stoner, Wired, 17 Aug. 2021 He was born with a condition called nystagmus that causes involuntary eye movement and makes his vision blurry and hard to focus. Terry Collins, USA TODAY, 28 June 2021 Not only did his acuity improve tremendously, but his nystagmus was reduced. Susan R. Barry, WSJ, 18 June 2021 In the late 1800s, British coal miners would sometimes develop nystagmus, after working underground for several years. Rebecca Sohn, STAT, 22 Feb. 2021 See More
Jay R. Jordan, Chron, 6 May 2022 Officers performed a horizontal gaze nystagmus, a type of field sobriety test, and said Kumar failed four of six measures used to determine if someone is intoxicated. Jay R. Jordan, Chron, 5 May 2022 Little Johnny [who has low vision and nystagmus] was impressive in this episode. Dan Snierson, EW.com, 6 Apr. 2022 Apl’s life changed, however, when an American lawyer signed up to become his sponsor through the Pearl S. Buck Foundation and in 1986 brought him to Los Angeles with hopes of correcting his nystagmus, defined by the American Optometric Assn. Los Angeles Times, 22 Aug. 2021 With nystagmus, a disability that causes involuntary eye movement, Saylor’s vision with glasses is 20/200 and approximately 20/1400 without. Grant Stoner, Wired, 17 Aug. 2021 He was born with a condition called nystagmus that causes involuntary eye movement and makes his vision blurry and hard to focus. Terry Collins, USA TODAY, 28 June 2021 Not only did his acuity improve tremendously, but his nystagmus was reduced. Susan R. Barry, WSJ, 18 June 2021 In the late 1800s, British coal miners would sometimes develop nystagmus, after working underground for several years. Rebecca Sohn, STAT, 22 Feb. 2021 See More Word History
Etymology
New Latin, from Greek nystagmos drowsiness, from nystazein to doze; probably akin to Lithuanian snusti to doze
First Known Use
1772, in the meaning defined above
Medical Definition
nystagmus
noun
nys·tag·mus nis-ˈtag-məs
: involuntary usually rapid movement of the eyeballs (as from side to side) occurring normally with dizziness during and after bodily rotation or abnormally following head injury or as a symptom of disease