Effects of light variation on Schwalbe's line-based anterior chamber angle metrics measured with cirrus spectral domain optical coherence tomography

2016 ◽  
Vol 44 (6) ◽  
pp. 455-464 ◽  
Author(s):  
Kenneth M Marion ◽  
Moritz Niemeyer ◽  
Brian Francis ◽  
Srinivas R Sadda ◽  
Vikas Chopra
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Chamber ◽  
Light Variation ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Anterior Chamber Angle ◽  
Chamber Angle

scholarly journals Reproducibility and Agreement Between 2 Spectral Domain Optical Coherence Tomography Devices for Anterior Chamber Angle Measurements

2015 ◽  
Vol 24 (9) ◽  
pp. 642-646 ◽  
Author(s):  
Kenneth M. Marion ◽  
Jyotsna Maram ◽  
Xiaojing Pan ◽  
Anna Dastiridou ◽  
ZhouYuan Zhang ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Chamber ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Anterior Chamber Angle ◽  
Angle Measurements ◽  
Chamber Angle

scholarly journals Comparison of Physiologic versus Pharmacologic Mydriasis on Anterior Chamber Angle Measurements Using Spectral Domain Optical Coherence Tomography

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Anna I. Dastiridou ◽  
Xiaojing Pan ◽  
ZhouYuan Zhang ◽  
Kenneth M. Marion ◽  
Brian A. Francis ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Chamber ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Anterior Chamber Angle ◽  
Lighting Condition ◽  
Inferior Angle ◽  
Oct Imaging ◽  
Chamber Angle ◽  
Sd Oct

Purpose. To compare the effects of physiologic versus pharmacologic pupil dilation on anterior chamber angle (ACA) measurements obtained with spectral domain optical coherence tomography (SD-OCT).Methods. Forty eyes from 20 healthy, phakic individuals with open angles underwent anterior segment OCT imaging under 3 pupillary states: (1) pupil constricted under standard room lighting, (2) physiologic mydriasis in a darkened room, and (3) postpharmacologic mydriasis. Inferior angle Schwalbe’s line-angle opening distance (SL-AOD) and SL-trabecular-iris-space area (SL-TISA) were computed for each eye and pupillary condition by masked, certified Reading Center graders using customized grading software.Results. SL-AOD and SL-TISA under pupillary constriction to room light were0.87±0.31 mm and0.33±0.14 mm2, respectively; decreased to0.75±0.29 mmP<0.01and0.29±0.13 mm2  P<0.01, respectively, under physiologic mydriasis; and increased to0.90±0.38 mmP<0.01and0.34±0.17 mm2  P=0.06under pharmacologic mydriasis compared to baseline.Conclusions. Using SD-OCT imaging, pharmacologic mydriasis yielded the widest angle opening, whereas physiologic mydriasis yielded the most angle narrowing in normal individuals with open iridocorneal angles. Accounting for the state of the pupil and standardizing the lighting condition would appear to be of importance for future studies of the angle.

Evaluation of the Narrow Anterior Chamber Angle by Anterior Segment Optical Coherence Tomography

2016 ◽  
Vol 57 (2) ◽  
pp. 87-91 ◽  
Author(s):  
Jie Lan ◽  
Dapeng Sun ◽  
Khatoon Alabdulrasool ◽  
Hassan Ebrahim Yusuf ◽  
Lu Zhang
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Chamber ◽  
Anterior Segment ◽  
Optical Coherence ◽  
Anterior Chamber Angle ◽  
Chamber Angle

Reproducibility of Anterior Chamber Angle Analyses With the Swept-Source Optical Coherence Tomography in Young, Healthy Caucasians

2014 ◽  
Vol 55 (6) ◽  
pp. 3999 ◽  
Author(s):  
Hellen C. S. Römkens ◽  
Henny J. M. Beckers ◽  
Marc Frusch ◽  
Tos T. J. M. Berendschot ◽  
John de Brabander ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Chamber ◽  
Optical Coherence ◽  
Anterior Chamber Angle ◽  
Swept Source ◽  
Chamber Angle
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