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    1. High-Resolution Anterior Segment Optical Coherence Tomography in Intraepithelial Versus Invasive Ocular Surface Squamous Neoplasia

      High-Resolution Anterior Segment Optical Coherence Tomography in Intraepithelial Versus Invasive Ocular Surface Squamous Neoplasia

      Purpose: To evaluate the imaging characteristics of intraepithelial and invasive ocular surface squamous neoplasia ( OSSN ) on high-resolution anterior segment optical coherence tomography (ASOCT). Methods: In this prospective cross-sectional study, 17 consecutive patients (10 intraepithelial and 7 invasive) with histopathologically proven OSSN were included. All patients underwent slit-lamp imaging and time-domain ASOCT at premarked sites. Management included standard complete surgical excision with margin clearance and cryotherapy for all cases. The correlation between imaging characteristics and histopathology sections at the premarked sites was analyzed to determine surrogate markers that may help differentiate intraepithelial from invasive OSSN . In addition, 3 patients with presumed ...

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    2. Impact of underlying plaque type on strut coverage in the early phase after drug-eluting stent implantation

      Impact of underlying plaque type on strut coverage in the early phase after drug-eluting stent implantation

      Background The aim of this study was to investigate whether the underlying plaque type affects the neointimal coverage after drug-eluting stent implantation. Methods A total of 1793 struts in 22 zotarolimus-eluting stents were assessed using optical coherence tomography imaging within 3 months of implantation. Neointimal coverage was evaluated within 5 mm from each stent edge on cross-sectional optical coherence tomography images at every 1-mm interval. The percentage of struts covered by neointima was compared among the normal segment group, the fibrous plaque group, and the lipid plaque group on the basis of the underlying plaque type. Results The percentage of ...

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    3. Comparative Evaluation of Foveal Avascular Zone on Two Optical Coherence Tomography Angiography Devices

      Comparative Evaluation of Foveal Avascular Zone on Two Optical Coherence Tomography Angiography Devices

      SIGNIFICANCE This study compares foveal avascular zone (FAZ) geometry in healthy eyes as imaged by two commercially available optical coherence tomography angiography (OCTA) devices. Foveal avascular zone measurements are repeatable and reproducible with each OCTA device, but interdevice agreement was poor. We provide conversion factors between devices. PURPOSE The purpose of this study was to perform comparative evaluation of FAZ geometry in healthy eyes as imaged by two commercially available OCTA devices. METHODS Ninety-six eyes of 48 healthy subjects were imaged prospectively on each of two OCTA devices (DRI-OCT [Topcon Corporation, Tokyo, Japan]; Cirrus 5000 [Carl Zeiss Meditec Inc., Dublin ...

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    4. OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY CHARACTERISTICS OF POLYPOIDAL CHOROIDAL VASCULOPATHY SECONDARY TO CHRONIC CENTRAL SEROUS CHORIORETINOPATHY

      OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY CHARACTERISTICS OF POLYPOIDAL CHOROIDAL VASCULOPATHY SECONDARY TO CHRONIC CENTRAL SEROUS CHORIORETINOPATHY

      Purpose: To report diagnostic capability of optical coherence tomography angiography (OCTA) in detecting polypoidal choroidal vasculopathy and its morphologic characteristics in white patients with chronic central serous chorioretinopathy . Methods: Retrospective consecutive series of 20 eyes (17 consecutive patients) with a diagnosis of polypoidal choroidal vasculopathy secondary to chronic central serous chorioretinopathy based on clinical and multimodal imaging were included. All patients underwent a complete ophthalmologic examination, including best-correct visual acuity, fundus autofluorescence, fluorescein and indocyanine green angiography , spectral-domain optical coherence tomography , and OCTA. Results: In all eyes (100%), OCTA revealed the branching vascular network as a hyperflow lesion in both ...

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    5. Valsalva Maneuver and Peripapillary OCT Angiography Vessel Density

      Valsalva Maneuver and Peripapillary OCT Angiography Vessel Density

      Purpose: To investigate the potential influence of breath holding on the results of peripapillary vessel density (VD) measurement with optical coherence tomography angiography. Materials and Methods: Three peripapillary VD measurements were made at 2-minute intervals on the right eye of 12 healthy young volunteers using the Angiovue/RTvue-XR OCT (software version 2017.1, Phase 7 update) without changing the head and body positions. During the first 2 measurements the volunteers were breathing normally. Four seconds before the third measurement the participants started to perform the Valsalva maneuver and continued until the completion of the ∼17-second image acquisition. The whole image ...

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    6. Anatomy of the Eye and Orbit—The Clinical Essentials

      Anatomy of the Eye and Orbit—The Clinical Essentials

      Anatomy of the Eye and Orbit is a clear and concise text that will suit the needs of students and residents and will also spark the interest of eye care professionals. This book is a collaboration of a team of eye care professionals and researchers. Written by experts in the field, the book targets a broad audience. It incorporates abundant clinical pearls and novel findings and discusses controversies that are emerging in the field.

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    7. Noninvasive Detection of Mitochondrial Dysfunction in Ocular Hypertension and Primary Open-angle Glaucoma

      Noninvasive Detection of Mitochondrial Dysfunction in Ocular Hypertension and Primary Open-angle Glaucoma

      Purpose: To assess mitochondrial dysfunction in vivo in ocular hypertension (OHT) and primary open-angle glaucoma (POAG) using retinal metabolic analysis. Patients and Methods: This was an observational, cross-sectional study performed from November 2015 to October 2016 at the New York Eye and Ear Infirmary of Mount Sinai. Thirty-eight eyes with varying stages of POAG, 16 eyes with OHT, and 32 control eyes were imaged on a custom fundus camera modified to measure full retinal thickness fluorescence at a wavelength optimized to detect flavoprotein fluorescence (FPF). Optical coherence tomography was used to measure the retinal ganglion cell-plus layer (RGC+) thickness. Macular ...

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    8. Anterior Segment Optical Coherence Tomography of Post-Descemet Stripping Automated Endothelial Keratoplasty Eyes to Evaluate Graft Morphology and Its Association With Visual Outcome

      Anterior Segment Optical Coherence Tomography of Post-Descemet Stripping Automated Endothelial Keratoplasty Eyes to Evaluate Graft Morphology and Its Association With Visual Outcome

      Purpose: To evaluate the relationship between graft thickness /regularity and visual outcomes of Descemet stripping automated endothelial keratoplasty ( DSAEK ). Methods: Records of post- DSAEK patients who were examined by anterior segment optical coherence tomography at “Villa Igea” Private Hospital (Forlì, Italy) since April 2015 were reviewed. Pachymetric and elevation maps of both host cornea and graft were analyzed. Graft regularity was determined based on the root mean square error (RMSE) of the graft pachymetric measurements taken 3 and 6 mm from the center and the RMSE of the corneal elevation measurements at its posterior and interface surfaces. These parameters were ...

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    9. IMPROVED DETECTION AND DIAGNOSIS OF POLYPOIDAL CHOROIDAL VASCULOPATHY USING A COMBINATION OF OPTICAL COHERENCE TOMOGRAPHY AND OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY

      IMPROVED DETECTION AND DIAGNOSIS OF POLYPOIDAL CHOROIDAL VASCULOPATHY USING A COMBINATION OF OPTICAL COHERENCE TOMOGRAPHY AND OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY

      Purpose: To assess the ability of optical coherence tomography (OCT) alone and in combination with OCT angiography (OCTA) to differentiate polypoidal choroidal vasculopathy (PCV) from neovascular age-related macular degeneration , as compared to fluorescein angiography and indocyanine green angiography. Methods: This is a cross-sectional study. All participants had a standardized history, clinical examination including measurement of best-corrected visual acuity, slit-lamp biomicroscopy, and indirect fundus examination, and underwent standardized imaging (color photography, fluorescein and indocyanine green angiography, OCT, and OCTA) after predefined protocols. We used a 2-step approach (Step 1: spectral domain OCT; Step 2: addition of OCTA) combining structural OCT and ...

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    10. PROGRESSION OF MACULAR ATROPHY IN EYES WITH TYPE 1 NEOVASCULARIZATION AND AGE-RELATED MACULAR DEGENERATION RECEIVING LONG-TERM INTRAVITREAL ANTI–VASCULAR ENDOTHELIAL GROWTH FACTOR THERAPY: An Optical Coherence Tomographic Angiography Analysis

      PROGRESSION OF MACULAR ATROPHY IN EYES WITH TYPE 1 NEOVASCULARIZATION AND AGE-RELATED MACULAR DEGENERATION RECEIVING LONG-TERM INTRAVITREAL ANTI–VASCULAR ENDOTHELIAL GROWTH FACTOR THERAPY: An Optical Coherence Tomographic Angiography Analysis

      Purpose: To evaluate the size and location of macular atrophy in eyes with Type-1 neovascularization (NV) and age-related macular degeneration receiving chronic intravitreal anti–vascular endothelial growth factor therapy. Methods: A retrospective review of a case series of 27 eyes with Type-1 NV and retinal pigment epithelial detachment (PED) having a minimum of 12 months follow-up was performed. Demographic information and visual acuity at baseline and the final follow-up were collected. Spectral-domain optical coherence tomography (OCT) and near-infrared reflectance were analyzed at 6-month intervals to detect and measure macular atrophy. Location and area (in square millimeter) of macular atrophy were ...

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    11. RESIDUAL CHOROIDAL VESSELS IN ATROPHY CAN MASQUERADE AS CHOROIDAL NEOVASCULARIZATION ON OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY: Introducing a Clinical and Software Approach

      RESIDUAL CHOROIDAL VESSELS IN ATROPHY CAN MASQUERADE AS CHOROIDAL NEOVASCULARIZATION ON OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY: Introducing a Clinical and Software Approach

      Purpose: To present a postprocessing approach in optical coherence tomography angiography (OCTA) to facilitate the visualization and interpretation of lesions in age-related macular degeneration with coexisting atrophy and choroidal neovascularization (CNV). Methods: This retrospective study included 32 eyes of 26 patients with atrophy and treated CNV and 8 eyes with treatment-naive geographic atrophy . En face optical coherence tomography slabs highlighting atrophy were pseudocolored and merged with the corresponding OCTA. Cross-sectional optical coherence tomography and postprocessed OCTA were analyzed to identify CNV and normal choroidal vessels in relationship to the atrophy. We correlate the OCTA findings with those in a donor ...

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    12. Quantitative Optical Coherence Tomography Analysis Of Retinal Degenerative Changes In Diabetic Macular Edema And Neovascular AGE-RELATED Macular Degeneration

      Quantitative Optical Coherence Tomography Analysis Of Retinal Degenerative Changes In Diabetic Macular Edema And Neovascular AGE-RELATED Macular Degeneration

      Purpose: To investigate the relationship of the pre–anti-vascular endothelial growth factor (VEGF) retinal tissue area (RTA) and optical density (ODRT) of the retinal optical slice portion located in the central subfield , and their ratio (RTA/ODRT), in the presence of diabetic macular edema or of inraretinal cystic fluid in neovascular age-related macular degeneration, to central retinal thickness and best-corrected visual acuity after anti-VEGF treatment with ME resolution. Methods: The optical coherence tomography images and medical records of 33 patients (41 eyes) with neovascular age-related macular degeneration, 15 (21 eyes) with diabetic macular edema and 9 healthy individuals (15 eyes ...

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    13. OBSERVATION OF VITREOUS FEATURES USING ENHANCED VITREOUS IMAGING OPTICAL COHERENCE TOMOGRAPHY IN HIGHLY MYOPIC RETINOSCHISIS

      OBSERVATION OF VITREOUS FEATURES USING ENHANCED VITREOUS IMAGING OPTICAL COHERENCE TOMOGRAPHY IN HIGHLY MYOPIC RETINOSCHISIS

      Purpose: To observe features of the posterior vitreous and vitreoretinal interface in highly myopic eyes with retinoschisis using enhanced vitreous imaging optical coherence tomography . Methods: Comprehensive ophthalmologic examination and enhanced vitreous imaging optical coherence tomography were performed in 77 eyes of 63 patients with highly myopic retinoschisis . Two different modes of spectral domain optical coherence tomography were employed to estimate retinoschisis and the posterior vitreous features in optical coherence tomography images, respectively. The types and distribution of vitreoretinal interface abnormalities were also analyzed. Results: Complete posterior vitreous detachment (PVD) was identified in 55 eyes (71.4%) with a Weiss ring ...

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    14. SD-OCT And Microperimetric Correlated Changes In Progressive X-LINKED Retinoschisis After Vitrectomy: A Case Report

      SD-OCT And Microperimetric Correlated Changes In Progressive X-LINKED Retinoschisis After Vitrectomy: A Case Report

      Purpose: To report optical coherence tomography and microperimetric correlated changes in a case of bilateral foveal schisis in progressive X-linked retinoschisis (XLRS) treated with vitrectomy , inner limiting membrane (ILM) peeling, and air tamponade. Methods: One case report. Results: An 18-year-old boy with bilateral foveal schisis in progressive XLRS underwent vitrectomy , ILM peeling and air tamponade in both eyes. At baseline and follow-up (1 month in right eye, 6 months in left eye), visual acuity test, optical coherence tomography, retinal sensitivity map, and fixation stability study were performed. At the end of follow-up, in both eyes, the largest foveal schisis cavities ...

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    15. CAPILLARY NETWORK ALTERATIONS IN X-LINKED RETINOSCHISIS IMAGED ON OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY

      CAPILLARY NETWORK ALTERATIONS IN X-LINKED RETINOSCHISIS IMAGED ON OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY

      Purpose: To assess foveal and parafoveal vasculature at the superficial capillary plexus, deep capillary plexus, and choriocapillaris of patients with X-linked retinoschisis by means of optical coherence tomography angiography. Methods: Six patients with X-linked retinoschisis (12 eyes) and seven healthy controls (14 eyes) were recruited and underwent complete ophthalmologic examination, including best-corrected visual acuity, dilated fundoscopy, and 3 × 3-mm optical coherence tomography angiography macular scans (DRI OCT Triton; Topcon Corp). After segmentation and quality review, optical coherence tomography angiography slabs were imported into ImageJ 1.50 (NIH; Bethesda) and digitally binarized. Quantification of vessel density was performed after foveal avascular ...

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    16. Automated Detection and Classification of Corneal Haze Using Optical Coherence Tomography in Patients With Keratoconus After Cross-Linking

      Automated Detection and Classification of Corneal Haze Using Optical Coherence Tomography in Patients With Keratoconus After Cross-Linking

      Purpose: To evaluate a proposed technology for offering objective grading and mapping of corneal haze as detected by corneal spectral domain optical coherence tomography after corneal cross-linking . Methods: This was a retrospective study to evaluate corneal optical coherence tomography images performed on 44 eyes of 44 patients who underwent corneal cross-linking between January 2014 and May 2015, at the American University of Beirut Medical Center. Results: Overall average brightness of the cornea was markedly increased from 43.4% (±6.0) at baseline to 50.2% (±4.4) at 1 month, 47.9% (±4.4) at 3 months, and 46.4 ...

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    17. FOCAL DISRUPTIONS IN ELLIPSOID ZONE AND INTERDIGITATION ZONE ON SPECTRAL-DOMAIN OPTICAL COHERENCE TOMOGRAPHY IN PACHYCHOROID PIGMENT EPITHELIOPATHY

      FOCAL DISRUPTIONS IN ELLIPSOID ZONE AND INTERDIGITATION ZONE ON SPECTRAL-DOMAIN OPTICAL COHERENCE TOMOGRAPHY IN PACHYCHOROID PIGMENT EPITHELIOPATHY

      Purpose: To describe a distinctive focal disruption of the ellipsoid zone (EZ)/interdigitation zone (IZ) determined by spectral-domain optical coherence tomography in eyes with pachychoroid pigment epitheliopathy. Methods: Twenty patients with focal EZ/IZ disruptions associated with pachychoroid without history or findings indicative of subretinal fluid were evaluated. Detailed clinical/imaging characteristics and their longitudinal changes were evaluated. Results: A total of 27 lesions from 21 eyes were included. The mean subfoveal choroidal thickness was 450 μ m. In six of seven eyes with previous imaging data to compare, characteristic drusenoid lesions associated with thick choroid preceded focal EZ/IZ disruptions ...

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    18. COMBINING EN FACE OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY WITH STRUCTURAL OPTICAL COHERENCE TOMOGRAPHY AND BLOOD FLOW ANALYSIS FOR DETECTING CHOROIDAL NEOVASCULAR COMPLEXES IN PIGMENT EPITHELIAL DETACHMENTS

      COMBINING EN FACE OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY WITH STRUCTURAL OPTICAL COHERENCE TOMOGRAPHY AND BLOOD FLOW ANALYSIS FOR DETECTING CHOROIDAL NEOVASCULAR COMPLEXES IN PIGMENT EPITHELIAL DETACHMENTS

      Purpose: This work aimed to describe the morphology of pigment epithelial detachment ( PED ) using optical coherence tomography angiography and to investigate its potential to detect choroidal neovascularization in various types of PEDs. Methods: In this retrospective study, 53 patients diagnosed with PED after undergoing both optical coherence tomography angiography ( AngioPlex , CIRRUS HD-OCT) and spectral domain optical coherence tomography (Spectralis SD-OCT) were included. Results: Among the 53 eyes, flat vascularized PED ( vPED ) affected 21 eyes (40%), peaked vPED affected 10 eyes (19%), serous PED affected 12 eyes (23%), drusenoid PED affected 6 eyes (11%), and 4 eyes (7%) had multiple PED ...

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    19. SWEPT-SOURCE OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY IN CHOROIDAL MELANOMA: An Analysis of 22 Consecutive Cases

      SWEPT-SOURCE OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY IN CHOROIDAL MELANOMA: An Analysis of 22 Consecutive Cases

      Purpose: To describe the imaging features of choroidal melanoma using swept-source optical coherence tomography angiography (SS- OCT-A ) and to evaluate its ability to display tumor intrinsic vasculature. Methods: Consecutive patients diagnosed with choroidal melanoma underwent a complete ophthalmic evaluation, including best-corrected visual acuity, color fundus photography, B-scan ultrasound, fluorescein angiography , indocyanine green angiography , and SS- OCT-A ( PLEX Elite 9000; Carl Zeiss Meditec, Inc, Dublin, CA). Results: Twenty-two eyes of 22 consecutive patients were included in the study; 11 cases (50%) were treatment naive. Three lesions (14%) were located at the macula, 14 (63%) between the macula and equator, and 5 ...

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    20. Diagnostic Abilities of the Optical Microangiography Parameters of the 3×3 mm and 6×6 mm Macular Scans in Glaucoma

      Diagnostic Abilities of the Optical Microangiography Parameters of the 3×3 mm and 6×6 mm Macular Scans in Glaucoma

      Purpose: To evaluate the diagnostic abilities of macular vessel length and perfusion densities measured with optical microangiography (OMAG) over a 3×3 mm and a 6×6 mm region, and to compare these with macular ganglion cell-inner plexiform layer (GCIPL) thickness in eyes with primary open-angle glaucoma (POAG). Methods: In a cross-sectional study, 96 eyes of 57 control subjects and 88 eyes of 57 POAG patients underwent macular imaging with optical coherence tomography. Area under receiver operating characteristic curves (AUC) and sensitivities at 90% specificity of OMAG and GCIPL parameters were evaluated. Results: Most OMAG parameters of the 3×3 ...

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    21. A Sectoral Analysis of Vessel Density Measurements in Perimetrically Intact Regions of Glaucomatous Eyes: An Optical Coherence Tomography Angiography Study

      A Sectoral Analysis of Vessel Density Measurements in Perimetrically Intact Regions of Glaucomatous Eyes: An Optical Coherence Tomography Angiography Study

      Purpose: To study sectoral vessel density (VD) and structural alterations in the peripapillary and parafoveal hemiretina corresponding to perimetrically intact regions of glaucomatous eyes with hemifield defects and to compare these with healthy eyes using optical coherence tomography. Methods: This cross-sectional study included 37 eyes with open-angle glaucoma having visual fields defects restricted to 1 hemifield and 45 age-matched controls. Peripapillary VD and retinal nerve fiber layer (RNFL) thickness were measured in 8 sectors. Parafoveal VD and ganglion cell complex thickness were measured in the superior and inferior hemispheres of the macula. These parameters were compared between the intact hemiretinae ...

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      Mentions: Harsha L. Rao
    22. Anterior Chamber Angle Tissue as an Incidental Optical Coherence Tomography Finding in a Large Healthy Caucasian Child Population

      Anterior Chamber Angle Tissue as an Incidental Optical Coherence Tomography Finding in a Large Healthy Caucasian Child Population

      Purpose: The aim of this study was to describe the presence of anterior chamber angle (ACA) tissue as an incidental optical coherence tomography (OCT) finding in healthy children. Methods: For this cross-sectional study, we reviewed Fourier-domain OCT images obtained in 422 children, who were chosen as candidates for inclusion in a prior study, and who visited our clinic for a routine vision test. The presence of angle tissue was assessed in the nasal and temporal quadrants. On tomographies showing angle tissue , several measurements were made, including ACA width and trabecular meshwork length and size. Results: Hyperreflective tissue was observed in ...

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    23. SPONTANEOUS CLOSURE OF SIMULTANEOUS IDIOPATHIC MACULAR HOLES DOCUMENTED BY SPECTRAL-DOMAIN OPTICAL COHERENCE TOMOGRAPHY

      SPONTANEOUS CLOSURE OF SIMULTANEOUS IDIOPATHIC MACULAR HOLES DOCUMENTED BY SPECTRAL-DOMAIN OPTICAL COHERENCE TOMOGRAPHY

      Purpose: To report a case of spontaneous closure of simultaneous full-thickness macular hole. Methods: Case report and literature review. Results: A 67-year-old woman with small-diameter simultaneous macular holes was observed for a period of 5 months, and progression was documented with spectral-domain optical coherence tomography. Closure of right full-thickness macular hole was evidenced by 1 month and left full-thickness macular hole by 5 months. Conclusion: This case demonstrates possible spontaneous resolution of a condition that is usually treated surgically. A period of observation with serial imaging studies may be advised in cases of small macular holes.

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    24. Case Report: Optical Coherence Tomography Angiography in Morning Glory Disc Anomaly

      Case Report: Optical Coherence Tomography Angiography in Morning Glory Disc Anomaly

      SIGNIFICANCE Morning glory disc anomaly is a congenital abnormality of the optic disc. Optical coherence tomography angiography shows vascular rarefaction of the superficial and deep capillary plexuses and increased vascularity of the radial peripapillary capillary plexus. We hypothesize that this congestion represents a compensatory mechanism to an abnormal vasculogenesis. PURPOSE The aim of this study was to describe the optic disc vascular alterations occurring at choriocapillaris and retinal vascular plexuses in a patient affected by bilateral morning glory disc anomaly with optical coherence tomography angiography. CASE REPORT A 24-year-old white man presented for clinical evaluation to our Department of Ophthalmology ...

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