Agreement of Anterior Segment Parameters Obtained From Swept-Source Fourier-Domain and Time-Domain Anterior Segment Optical Coherence Tomography

Background: The present study determined the mean reference values of the anterior segment parameters of the selected eye using swept source optical coherence tomography (SS-OCT) in healthy Caucasian participants. Methods: A total of 166 volunteers (age 54–79 years), women (n = 92) and men (n = 74), were analyzed. One eye of each subject was randomly selected for anterior segment imaging. The anterior segment of the eye was scanned with CASIA2. The analyzed anterior segment parameters were divided into three groups, namely parameters of the cornea, lens, and angle. Results: The OCT (e.g., Ks, Kf, pKf, pKs, and central corneal thickness) and Fourier parameters of the cornea were significantly different between females and males. The iridocorneal angle was the smallest in the upper quadrant for all distance from the apex of the angle (250, 500, and 750 µm). Conclusions: Therefore, SS-OCT enables the analysis of parameters of the cornea, anterior chamber, lens, and iridocorneal angle, highlighting its clinical utility. Sex-specific differences in the analyzed parameters should be taken into account during the diagnosis of corneal diseases. The configuration of the filtration angle is an important marker during glaucoma diagnosis and drainage implant surgery. Measurements with CASIA 2is characterized by very good repeatability.

Download Full-text

Anterior segment imaging with fourier-domain optical coherence tomography system compared to time-domain OCT

Acta Ophthalmologica ◽

10.1111/j.1755-3768.2008.4236.x ◽

2008 ◽

Vol 86 ◽

pp. 0-0

Author(s):

A NOWINSKA ◽

E WYLEGALA ◽

M MILKA ◽

W MANKOWSKI

Keyword(s):

Optical Coherence Tomography ◽

Time Domain ◽

Anterior Segment ◽

Fourier Domain ◽

Optical Coherence ◽

Optical Coherence Tomography System ◽

Tomography System ◽

Anterior Segment Imaging ◽

Time Domain Oct

Download Full-text

Theoretical and practical considerations on detection performance of time domain, Fourier domain, and swept source optical coherence tomography

Journal of Biomedical Optics ◽

10.1117/1.2753410 ◽

2007 ◽

Vol 12 (4) ◽

pp. 044007 ◽

Cited By ~ 61

Author(s):

Bin Liu ◽

Mark E. Brezinski

Keyword(s):

Optical Coherence Tomography ◽

Time Domain ◽

Detection Performance ◽

Fourier Domain ◽

Optical Coherence ◽

Swept Source

Download Full-text

Assessment of corneal thickness measurement using swept-source Fourier-domain anterior segment optical coherence tomography and Scheimpflug camera

Journal of Cataract & Refractive Surgery ◽

10.1016/j.jcrs.2012.05.004 ◽

2012 ◽

Vol 38 (7) ◽

pp. 1305-1306 ◽

Cited By ~ 2

Author(s):

Jinhai Huang ◽

Yifan Feng ◽

Qinmei Wang ◽

Konrad Pesudovs

Keyword(s):

Optical Coherence Tomography ◽

Corneal Thickness ◽

Anterior Segment ◽

Thickness Measurement ◽

Fourier Domain ◽

Optical Coherence ◽

Swept Source ◽

Scheimpflug Camera

Download Full-text

Noise sources and optoelectronics which affect axial detection performance of time domain, Fourier domain, and swept source optical coherence tomography

10.1117/12.646460 ◽

2006 ◽

Author(s):

Bin Liu ◽

Mark E. Brezinski

Keyword(s):

Optical Coherence Tomography ◽

Time Domain ◽

Detection Performance ◽

Fourier Domain ◽

Optical Coherence ◽

Noise Sources ◽

Swept Source

Download Full-text

Agreement between Gonioscopic Examination and Swept Source Fourier Domain Anterior Segment Optical Coherence Tomography Imaging

Journal of Ophthalmology ◽

10.1155/2016/1727039 ◽

2016 ◽

Vol 2016 ◽

pp. 1-8 ◽

Cited By ~ 15

Author(s):

Mohammed Rigi ◽

Nicholas P. Bell ◽

David A. Lee ◽

Laura A. Baker ◽

Alice Z. Chuang ◽

...

Keyword(s):

Optical Coherence Tomography ◽

Anterior Segment ◽

Fourier Domain ◽

Optical Coherence ◽

Swept Source ◽

Tomography Imaging ◽

Narrow Angle ◽

Optical Coherence Tomography Imaging ◽

The Mean ◽

Classification Agreement

Purpose. To evaluate interobserver, intervisit, and interinstrument agreements for gonioscopy and Fourier domain anterior segment optical coherence tomography (FD ASOCT) for classifying open and narrow angle eyes. Methods. Eighty-six eyes with open or narrow anterior chamber angles were included. The superior angle was classified open or narrow by 2 of 5 glaucoma specialists using gonioscopy and imaged by FD ASOCT in the dark. The superior angle of each FD ASOCT image was graded as open or narrow by 2 masked readers. The same procedures were repeated within 6 months. Kappas for interobserver and intervisit agreements for each instrument and interinstrument agreements were calculated. Results. The mean age was 50.9 (±18.4) years. Interobserver agreements were moderate to good for both gonioscopy (0.57 and 0.69) and FD ASOCT (0.58 and 0.75). Intervisit agreements were moderate to excellent for both gonioscopy (0.53 to 0.86) and FD ASOCT (0.57 and 0.85). Interinstrument agreements were fair to good (0.34 to 0.63), with FD ASOCT classifying more angles as narrow than gonioscopy. Conclusions. Both gonioscopy and FD ASOCT examiners were internally consistent with similar interobserver and intervisit agreements for angle classification. Agreement between instruments was fair to good, with FD ASOCT classifying more angles as narrow than gonioscopy.

Download Full-text