WordNet

a narrowing that reduces the flow through a channel (同)bottleneck, chokepoint
the action or process of compressing
tight or narrow compression (同)coarctation
a tight feeling in some part of the body; "he felt a constriction in her chest"; "she felt an alarming tightness in her chest"; "emotion caused a constriction of his throat" (同)tightness
of or relating to the pupil of the eye

PrepTutorEJDIC

〈U〉締めつけること,圧縮・〈U〉(胸などが)締めつけられる感じ / 〈C〉締めつけるもの

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1. アレキサンダー病 alexander disease
2. 先天性乳児ネフローゼ症候群 congenital and infantile nephrotic syndrome

English Journal

Comparative regional pupillography as a noninvasive biosensor screening method for diabetic retinopathy.

Ortube MC, Kiderman A, Eydelman Y, Yu F, Aguilar N, Nusinowitz S, Gorin MB.SourceDepartment of Ophthalmology, Jules Stein Eye Institute.
Investigative ophthalmology & visual science.Invest Ophthalmol Vis Sci.2013 Jan 2;54(1):9-18. doi: 10.1167/iovs.12-10241.
PURPOSE: We describe infrared regional pupillometry as an objective comparative assessment of midperipheral to central retinal sensitivity and to correlate with midperipheral retinal ischemia in diabetic subjects.METHODS: We tested 12 normal and 17 diabetic subjects using bilateral infrared pupillom
PMID 23154459

Analysis of anterior segment dynamics using anterior segment optical coherence tomography before and after laser peripheral iridotomy.

Zheng C, Guzman CP, Cheung CY, He Y, Friedman DS, Ong SH, Narayanaswamy AK, Chew PT, Perera SA, Aung T.AbstractOBJECTIVE To evaluate changes in the speed of pupil constriction and in anterior segment parameters after laser peripheral iridotomy (LPI) in patients with angle closure using anterior segment optical coherence tomography. METHODS In this prospective observational study, videos of pupil and anterior segment changes in response to illumination were captured with real-time video recording using anterior segment optical coherence tomography and were analyzed frame by frame before and after LPI. Customized software was used to measure the speed of pupil constriction and changes in anterior chamber depth and anterior chamber area, as well as iris thickness at 750 μm from the scleral spur, at the sphincter muscle region (0.75 mm from the pupillary margin), and at the mid-iris location (half the distance between the scleral spur and the pupillary margin). Pupil diameter, angle opening distance, and trabecular-iris space area at 500 μm from the scleral spur were determined. The speed of pupil constriction was defined as the rate of pupil diameter change in response to illumination. RESULTS Twenty-nine patients were included. Most were Chinese (26 of 29 [90%]) and female (18 of 29 [62%]). The anterior chamber area, angle opening distance at 500 μm from the scleral spur, and trabecular-iris space area at 500 μm from the scleral spur were significantly higher after LPI (P < .001). A significant increase was observed in the speed of pupil constriction after LPI (P < .005). In response to illumination, the rate of change in iris thickness at the sphincter muscle region and at 750 μm from the scleral spur was faster after LPI (P < .05). Similarly, an increase was observed in the speed of change of angle-opening distance at 500 μm from the scleral spur in response to illumination after LPI (P < .05). CONCLUSIONS In patients with angle closure, changes in dynamic iridopupillary behavior are observed after LPI. The speed of pupillary constriction is faster after LPI.
JAMA ophthalmology.JAMA Ophthalmol.2013 Jan 1;131(1):44-9. doi: 10.1001/jamaophthalmol.2013.567.
OBJECTIVE To evaluate changes in the speed of pupil constriction and in anterior segment parameters after laser peripheral iridotomy (LPI) in patients with angle closure using anterior segment optical coherence tomography. METHODS In this prospective observational study, videos of pupil and anterior
PMID 23307207

Japanese Journal

ドライバ状態における対光反射特性の特性検討(ITSポジショニング,一般)

神道圭造,山崎初夫,中野倫明,山本新,山田宗男
電子情報通信学会技術研究報告. ITS 110(150), 43-48, 2010-07-21
本研究は,運転前における安全運転の確保が困難なドライバ状態の検知を目的として瞳孔挙動に着目し,能動的な光刺激に対する瞳孔の対光反射特性について検討するものである.本稿では,安全運転の確保が困難な種々の状態のうち,先ずは飲酒状態と眠気状態を対象として検証を行い,その検知可能性について示す.対光反射特性における0.63散瞳時間および0.5縮瞳時間に基づくことで,両者の状態を弁別可能であることが確認され …
NAID 110007889761