Pupillometry in clinically sleepy patients

McLaren, Jay W.; Hauri, Peter; Lin, Siong-Chi; Harris, Cameron

doi:10.1016/s1389-9457(02)00017-5

Cited by 57 publications

(27 citation statements)

References 19 publications

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“…Studies have, for instance, consistently shown that the number and duration of eye blinks increase and the distance between upper and lower eyelid decreases with increased sleepiness (149). In addition, saccadic movements (149), pupillometric parameters (151), and posture (152) have all been found to be related to sleepiness. However, measures based on the abovementioned parameters are, to date, not really well established, although they have been tested within the transportation sector (153).…”

Section: Sleepiness-detection Devicesmentioning

confidence: 99%

Measures to counteract the negative effects of night work

Pallesen¹,

Bjorvatn²,

Magerøy³

et al. 2009

Scand J Work Environ Health

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Section: Sleepiness-detection Devicesmentioning

confidence: 99%

Measures to counteract the negative effects of night work

Pallesen¹,

Bjorvatn²,

Magerøy³

et al. 2009

Scand J Work Environ Health

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“…Research using pupillometry is being carried out to assess alertness in hypersomnolent patients. Observation of pupil behavior is also used in clinically sleepy patients [14], as well as in the assessment of cardiac autonomic function in athletes [15]. As shown, this method has a variety of clinical applications.…”

Section: Experimental Designmentioning

confidence: 99%

Estimation of operators’ fatigue using optical methods for determination of pupil activity

Różanowski

Bernat

Kamińska

2015

Int J Occup Med Environ Health

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Objectives: The purpose of this study was to develop and initially validate an objective, yet quick, method for assessment of human fatigue. This aim can be achieved by the use of an optical, non-contact method of analysis of pupil activity. The study involved 2 phenomena typical for the behavior of the human pupil: pupillary reflex and pupillary movements. The 1st phenomenon is related to the pupillary light reflex (PLR), which presents the results of physiological adaptation mechanisms of the human eye. The pupillary unrest index (PUI) is an additional parameter referring to the tendency for instability of the pupil. Material and Methods: Indicators of these 2 mechanisms were assessed under the same experimental laboratory conditions. Assessment was conducted on a group of volunteers (N = 10) during 4 controlled series of measurements performed at night. Pupillary reflex parameters associated with PLR and pupillary unrest index (PUI) were recorded using F²D Fit-For-Duty, a commercially available system made by AMTech Pupilknowlogy GmbH. Baseline pupil diameter, oscillations, reflex latency, maximum reaction time, pupil constriction time, pupil dilation time, and constriction amplitude were recorded. Results: As a result of the study, we were able to demonstrate correlation and confirm the usefulness of PLR and PST methods in the assessment of sleep deprivation. Parameters of PLR that may indicate human fatigue were identified. The effect of light impulse sequences on the dynamics of pupillary reflex and the relationship between PUI (pupillary unrest index) measurement duration and sleepiness assessment validity, were assessed. Conclusions: The results of the pilot studies were sufficient to develop minimum requirements for a PLR sensor that would be capable of estimating the level of fatigue with accuracy of a PUI method, but at a 5 times faster rate.

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“…U praksi se koriste upitnici za procenu akutne ili hronične pospanosti (Epfortova, Stanford, Karolinska skala pospanosti) [20][21][22]. Objektivna procena se zasniva na prepoznavanju specifičnih znakova (infracrvena refleksiona okulografija, pupilometrija) ili na utvrđivanju latence uspavljivanja u uslovima koji stimulišu ili destimulišu potrebu za spavanjem (Test višestruke latence uspavljivanja-MSLT, test održanja budnosti-MWT) [23][24][25].…”

Section: Prekomerna Dnevna Pospanost U Vožnjiunclassified

Excessive sleepiness and the risk of obstructive apnoea syndrome in professional ambulance drivers

Popević¹,

Milovanović²

2014

Engrami

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Saobraćajni traumatizam predstavlja značajan problem u zemljama Evrope i sveta. Ukupan broj saobraćajnih nezgoda u Srbiji pokazuje trend pada,uz porast teških telesnih povreda i smrtnih ishoda, a gubici u opremi i uslugama mere se milijardama dinara. Prekomerna pospanost u vožnji je direktno uzročno-posledično povezana sa nastankom saobraćajnih nezgoda. Smatra se da 20-25% nezgoda u Evropi nastaje kao posledica prekomerne pospanosti. Poremećaji disanja u snu, pre svega sindrom opstruktivne apneje u spavanju (OSA) imaju veliki uticaj na pojavu prekomerne pospanosti, pospanosti za volanom i nastanak saobraćajnih udesa. Procenjuje se da 13% muškaraca i 6% žena uzrasta 30-70 godina boluje od umerene do teške forme bolesti, a da kod 85% pacijenata oboljenje nije prepoznato. Prevalenca OSA je 26-50% u populaciji profesionalnih vozača. Vozači sa nelečenom ili nedijagnostikovanom OSA imaju dva do sedam puta veći rizik od saobraćajne nezgode. Primena terapije OSA dovodi do redukcije pospanosti i saobraćajnih nezgoda. U velikom broju zemalja postoji obaveza zdravstvenih pregleda vozača na prisustvo OSA. U Srbiji ne postoje epidemiološki podaci o prevalenci OSA, o učestalosti prekomerne pospanosti ili OSA u populaciji vozača učesnika saobraćajnih nezgoda. Preliminarna istraživa-nja na uzorku profesionalnih vozača ukazuju da trećina ispitanika ima prekomernu pospanost i povećan rizik od OSA koji su povezani sa pojavom saobraćajnih nezgoda.Ključne reči: apneja u spavanju, prekomerna pospanost, saobraćajne nezgode, vozači

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Pupillometry in clinically sleepy patients

Cited by 57 publications

References 19 publications

Measures to counteract the negative effects of night work

Measures to counteract the negative effects of night work

Estimation of operators’ fatigue using optical methods for determination of pupil activity

Excessive sleepiness and the risk of obstructive apnoea syndrome in professional ambulance drivers

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