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Popular Articles
Cirrus HD-OCT: Practical Application for Anterior Segment Imaging
Role of anterior segment optical coherence tomogram in Descemet's membrane detachment
Assessment of Scleral Spur Visibility With Anterior Segment Optical Coherence Tomography
Narrow- and Open-Angle Measurements With Anterior-Segment OpticalCoherence Tomography and Pentacam™
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Articles in category: Anterior Segment
Corneal Thickness in Keratoconus: Comparing Optical, Ultrasound, and Optical Coherence Tomography Pachymetry
Explore Ophthalmology (Nov 20 2012)
Purpose: To compare the central and peripheral pachymetry measurements determined using Orbscan IIz (Bausch & Lomb, Rochester, NY), Visante optical coherence tomography (OCT; Carl Zeiss Meditec, Dublin, CA), and RTVue OCT (Oculus Technologies, Wynwood, WA) with ultrasound pachymetry in eyes with established keratoconus and to evaluate the agreement between them. Design ...
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Accommodative changes in anterior chamber depth in patients with high myopia
Explore Journal of Cataract & Refractive Surgery (Jul 18 2012)
Purpose: To study the accommodative changes in the central anterior chamber depth (ACD) in patients with high myopia using anterior segment optical coherence tomography (AS-OCT).Setting: Cataract Surgery Department and Clinical & Functional Diagnostics Department, S. Fyodorov Eye Microsurgery Complex–Federal State Institution, Moscow, Russian Federation.Design: Prospective case-control study.Methods ...
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Mentions: Visante omni
Theoretical, Experimental, and Optical Coherence Tomography (OCT) Studies of Graft Apposition and Adhesion in Descemets Stripping Automated Endothelial Keratoplasty (DSAEK)
Explore iovs.org (Jun 20 2012)
Purpose. To investigate the effects of adhesion promoting surgical adjuncts in Descemets stripping automated endothelial keratoplasty (DSAEK). The effects of air-fill pressure, duration, use of venting incisions and stromal roughening on fluid dispersion, and donor adhesion strength were examined in theoretical, optical coherence tomography (OCT), and strain gauge models of ...
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Changes in Anterior Segment Morphology after Laser Peripheral Iridotomy: An Anterior Segment Optical Coherence Tomography Study - Corrected Proof
Explore OphSource (Mar 11 2012)
Purpose: Novel anterior segment optical coherence tomography (ASOCT) parameters associated with angle closure include anterior chamber area (ACA), anterior chamber volume (ACV), anterior chamber width (ACW), lens vault (LV), iris thickness (IT), iris area (I-area), and iris curvature (I-curv). We aimed to investigate changes in these parameters after laser peripheral ...
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Mentions: Carl Zeiss Meditec Visante omni
Dynamic Changes in Anterior Segment (AS) Parameters in Eyes with Primary Angle Closure (PAC) and PAC Glaucoma and Open-Angle Eyes Assessed Using AS Optical Coherence Tomography
Explore iovs.org (Feb 13 2012)
Purpose. To evaluate serial changes in anterior segment (AS) parameters in terms of variation in pupil diameter (PD) using AS optical coherence tomography (OCT) in eyes with primary angle closure or primary angle closure glaucoma (PCG), age-matched open-angle (AO) eyes, and young open-angle (YO) eyes. Methods. Forty-four PCG (mean ± SD ...
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Reliability and repeatability of swept-source Fourier-domain optical coherence tomography and Scheimpflug imaging in keratoconus
Explore Journal of Cataract & Refractive Surgery (Jan 19 2012)
Purpose: To evaluate the repeatability and reliability of a recently introduced swept-source Fourier-domain anterior segment optical coherence tomography (AS-OCT) system and a high-resolution Scheimpflug camera and to assess the agreement between the 2 instruments when measuring healthy eyes and eyes with keratoconus.Setting: Department of Ophthalmology, Medical and Health Science ...
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Outcomes of 4-Snip Punctoplasty for Severe Punctal Stenosis: Measurement of Tear Meniscus Height by Optical Coherence Tomography
Explore American Journal of Ophthalmology (Jan 19 2012)
Purpose: To investigate the surgical outcome of rectangular 4-snip punctoplasty, a modification of rectangular 3-snip procedures, using objective measurements. Design: Noncomparative case series. Methods: The medical charts of patients who underwent rectangular 4-snip punctoplasty for severe punctal stenosis with at least 6 months follow-up were reviewed. Before surgery and at ... (Read Full Article)
Comparison of anterior ocular segment biometry features and related factors among American Caucasians, American Chinese and mainland Chinese
Explore Wiley Online Library (Dec 15 2011)
Background: To compare the anterior segment biometric parameters amongst adult American Caucasians, American Chinese and mainland Chinese, in order to determine parameters that may contribute to increased risk for angle closure in Chinese.Design: Cross-sectional clinic-based studyParticipants: Four gender- and age-matched cohorts included Caucasians, American Chinese, Southern and Northern mainland ... (Read Full Article)
Differences in Baseline Dark and the Dark-to-Light Changes in Anterior Chamber Angle Parameters in Whites and Ethnic Chinese
Purpose. To assess the anterior chamber drainage angle width in the dark and the dark-to-light change () between Caucasians and Chinese aged 40 years and older. Methods. The study groups comprised four age- and sex-matched cohorts: American Caucasians, American Chinese, southern mainland Chinese, and northern mainland Chinese. Anterior segment optical coherence ... (Read Full Article)
Upper and Lower Tear Menisci in Sjogren's Syndrome Dry Eye
Purpose. To measure the tear menisci in Sjögren's syndrome dry eye (SSDE) by optical coherence tomography (OCT) and to determine its relationships with the clinical tests. Methods. Twenty-six SSDE, 26 non-SSDE, and 26 control subjects completed the Ocular Surface Disease Index (OSDI) before OCT determination of upper tear meniscus ... (Read Full Article)
Ocular Surface Epithelial Thickness Evaluation with Spectral-Domain Optical Coherence Tomography
Explore iovs.org (Nov 26 2011)
Purpose. To use in vivo spectral-domain optical coherence tomography (SD-OCT) to measure corneal, limbal, and bulbar conjunctival epithelial thickness. Methods. A total of 156 eyes of 79 subjects were enrolled in four groups: young control (YC group), < 40 years; middle-aged control (MAC group), > 40 years; patients with dry eye syndrome (KCS group); and patients with glaucoma ... (Read Full Article)
Determinants of Angle Width in Chinese Singaporeans
Explore OphSource (Nov 24 2011)
Purpose: To investigate determinants of angle width and derive mathematic models to best predict angle width.Design: Population-based, cross-sectional study.Participants: A total of 1067 Chinese subjects aged ≥40 years.Methods: Participants underwent gonioscopy, A-scan biometry, and imaging by anterior segment optical coherence tomography (ASOCT, Carl Zeiss Meditec, Dublin, CA ... (Read Full Article)
Mentions: Carl Zeiss Meditec
Anterior segment imaging in pediatric ophthalmology
Explore Journal of Cataract & Refractive Surgery (Nov 22 2011)
Anterior segment imaging in the pediatric population using commercially available equipment is rewarding but can be challenging. Successful imaging requires familiarity with the imaging modality used, a positive attitude, and the ability to quickly develop rapport with children. In this review, we demonstrate how external and slitlamp photography, Scheimpflug imaging ... (Read Full Article)
Preoperative iris configuration and intraocular pressure after cataract surgery
Explore Journal of Cataract & Refractive Surgery (Nov 14 2011)
Purpose: To determine predictors of long-term intraocular pressure (IOP) after cataract surgery.Setting: Hunter Holmes McGuire Veterans Administration Hospital, Richmond, Virginia, USA.Design: Case series.Methods: Clinical variables, IOP by applanation tonometry, anatomic features on anterior segment optical coherence tomography (AS-OCT), and gonioscopy were assessed before and after uneventful cataract ... (Read Full Article)
Anterior Chamber Angle Imaging with Swept-Source Optical Coherence Tomography: An Investigation on Variability of Angle Measurement
Purpose. To evaluate the reproducibility of anterior chamber angle measurements obtained by swept-source optical coherence tomography (OCT) and to identify factors associated with its measurement variability. Methods. One eye from each of 30 healthy subjects was randomly selected for anterior segment OCT imaging (Casia SS-1000 OCT; Tomey, Nagoya, Japan) in ... (Read Full Article)
Measurement of the Limbus-Insertion Distance in Adult Strabismus Patients with Anterior Segment Optical Coherence Tomography
Explore iovs.org (Oct 28 2011)
Purpose. To determine the ability of the anterior segment optical coherence tomography (AS-OCT) in measuring the distance from the corneoscleral limbus to the insertion site of the horizontal extraocular muscles in adult patients with strabismus. Methods. A total of 16 strabismus patients were recruited for this study. The limbus-insertion distances ... (Read Full Article)
Corneal topographic analysis in patients with keratoconus using 3-dimensional anterior segment optical coherence tomography
Explore Journal of Cataract & Refractive Surgery (Sep 19 2011)
Purpose: To assess a new corneal topographer based on 3-dimensional anterior segment optical coherence tomography (OCT-based corneal topographer) for analyzing corneal topography in patients with keratoconus.Setting: Osaka University Graduate School of Medicine, Osaka, Japan.Design: Evaluation of diagnostic test or technology.Methods: Keratoconic eyes and normal control eyes were ... (Read Full Article)
Preoperative and postoperative size and movements of the lens capsular bag: Ultrasound biomicroscopy analysis
Explore Journal of Cataract & Refractive Surgery (Sep 19 2011)
Purpose: To evaluate capsular bag size and accommodative movement before and after cataract surgery using ultrasound biomicroscopy (UBM) and anterior segment optical coherence tomography (AS-OCT).Setting: Ophthalmology Unit, Fabia Mater Clinic, Rome, Italy.Design: Cohort study.Methods: Eyes having cataract surgery and monofocal intraocular lens (IOL) implantation were studied using ... (Read Full Article)
Micrometer-Scale Contact Lens Movements Imaged by Ultrahigh-resolution Optical Coherence Tomography
Explore American Journal of Ophthalmology (Sep 13 2011)
Purpose: To dynamically evaluate contact lens movement and ocular surface shape using ultrahigh-resolution and ultralong-scan-depth optical coherence tomography (OCT).Design: Clinical research study of a laboratory technique.Methods: Four different types of soft contact lenses were tested on the left eye of 10 subjects (6 male and 4 female). Lens ... (Read Full Article)
Mentions: Bascom Palmer Eye Institute
Comparison of intraoperative subtraction pachymetry and postoperative anterior segment optical coherence tomography of laser in situ keratomileusis flaps
Explore Journal of Cataract & Refractive Surgery (Aug 15 2011)
Purpose: To prospectively compare intraoperative subtraction pachymetry flap thickness measurements and postoperative anterior segment optical coherence tomography (AS-OCT) flap thickness measurements in eyes that had laser in situ keratomileusis (LASIK) flap creation with a femtosecond laser or a mechanical microkeratome.Setting: Stanford Eye Laser Center, Stanford University School of Medicine ... (Read Full Article)
Tear meniscus measurement in nasolacrimal duct obstruction patients with Fourier-domain optical coherence tomography: novel three-point capture method
Explore Wiley Online Library (Jul 5 2011)
Fourier-domain optical coherence tomography (FD ODT) for the evaluation of marginal tear film has not been performed in patients with watery eye or in a controlled study. We used FD OCT to evaluate the height of the lower lid tear film at three points in normal adults and compared it ... (Read Full Article)
Role of anterior segment optical coherence tomogram in Descemet's membrane detachment
Explore Indian Journal of Ophthalmology (IJO) (Jun 10 2011)
Descemet's membrane detachment (DD) is a rare but serious complication of intraocular surgery. In rare cases where corneal edema is severe and we may not be able to visualize DD on slit-lamp examination, anterior segment optical coherence tomogram (AS-OCT) would be helpful. We describe two patients with DD, highlighting ...
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Association of Narrow Angles With Anterior Chamber Area and Volume Measured With Anterior-Segment Optical Coherence Tomography [Clinical Sciences]
Explore archopht.ama-assn.org (May 9 2011)
To describe the measurement of anterior chamber area and anterior chamber volume by anterior-segment optical coherence tomography and to investigate the association of these parameters with the presence of narrow angles. (Read Full Article)
Imaging Lid-Parallel Conjunctival Folds with OCT and Comparing Its Grading with the Slit Lamp Classification in Dry Eye Patients and Normal Subjects [Anatomy and Pathology]
To visualize and describe the morphologic appearance of lid-parallel conjunctival folds (LIPCOFs) by using optical coherence tomography (OCT) and to relate it to dry eye signs and symptoms. (Read Full Article)
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