Optical coherence tomography angiography in a case of multiple retinal arterial macroaneurysms
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Universidade Federal de São Paulo
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Universidade Federal de São Paulo
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Mentioned In 71 Articles
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Impact of manual correction over automated segmentation of spectral domain optical coherence tomography
Objective To study the automated segmentation of retinal layers using spectral domain optical coherence tomography (OCT) and the impact of manual correction over segmentation mistakes. Methods This was a retrospective, cross-sectional, comparative study that compared the automated segmentation of macular thickness using Spectralis OCT technology (Heidelberg Engineering, Heidelberg, Germany) versus manual segmentation in eyes with no macular changes, macular cystoid edema (CME), and choroidal neovascularization (CNV). Automated segmentation of macular ...Read Full Article -
Correlation between B-scan optical coherence tomography, en face thickness map ring and hyperautofluorescent ring in retinitis pigmentosa patients
Objective To evaluate and compare the B-scan OCT loss of ellipsoid zone, OCT en face thickness map constriction, and hyperautofluorescent ring constriction in RP patients. Methods Retrospective case series study. Forty-eight eyes of 24 RP patients with a parafoveal hyperautofluorescent ring were studied. The diagnosis of RP was established by the presence of rod response impairment and a prevalent decrease of scotopic over photopic responses on electroretinography. The FAF and ...Read Full Article -
Architecture evaluation of the main clear corneal incisions in femtosecond laser-assisted cataract surgery by optical coherence tomography imaging
Purpose: To assess the stability and reliability of femtosecond laser-assisted cataract surgery (FLACS) incisions design and dimensions using anterior segment optical coherence tomography (AS-OCT) imaging. Setting: Renato Ambrsio Ophthalmologic Study Center from Hospital Oftalmolgico de Braslia, Braslia, Brazil. Design: Prospective nonrandomized controlled case series. Methods: Eyes undergoing FLACS with triplanar main temporal clear corneal incision (CCI) were evaluated at the end of the case. Eyes that required any incision hydration ...Read Full Article -
Novel application of anterior segment optical coherence tomography for periocular imaging
Objective This study aims to assess the use of optical coherence tomography (OCT) imaging for periocular skin lesions and to determine which characteristic features of these images can be correlated to histopathology . Design This is an ongoing prospective study with Research Ethics Board approval. Participants Fifty patients over 18 years old with lesions clinically suspicious of nonmelanoma skin cancer on the periocular region were included in this study. Methods After ...Read Full Article -
Retinal nerve fiber layer analysis in cocaine users
Cocaine is a well-known factor of tissue ischemia and may be related to thinning of the inner retinal layers. The present study aimed to evaluate and determine whether cocaine users show retinal nerve fiber layer (RNFL) thinning by means of spectral-domain optical coherence tomography. A group of 17 cocaine users and 18 non-users were recruited for complete ophthalmologic examination. Spectral domain optical coherence tomography (Cirrus OCT) was used to evaluate ...Read Full ArticleMentions: Universidade Federal de São Paulo -
Repeatability of Split-Spectrum Amplitude-Decorrelation Angiography to Assess Capillary Perfusion Density Within Optical Coherence Tomography
BACKGROUND AND OBJECTIVE: To evaluate the repeatability of retinal thickness and vascular density measurements using split-spectrum amplitude-decorrelation angiography (SSADA) with optical coherence tomography (OCT). PATIENTS AND METHODS: Forty patients were divided into seven categories according to their diagnosis: no retinopathy (control), retinal vein occlusion, diabetes with no retinopathy, diabetes with retinopathy, non-exudative age-related macular degeneration (AMD), exudative AMD, and epiretinal membrane. Capillary density and retinal thickness measurements were taken and ...Read Full Article -
OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY FINDINGS IN ACUTE RETINAL NECROSIS
Purpose: To report clinical features of acute retinal necrosis (ARN) using optical coherence tomography angiography . Methods: A 59-year-old female patient presented with blurred vision in the left eye for 1 day. The patient presented posterior uveitis with multiple peripheral areas of retinal pallor with presumed acute retinal necrosis . Herpes simplex virus Type 1 infection was confirmed after serologic tests, and the polymerase chain reaction analysis of the aqueous humor tested ...Read Full ArticleMentions: Universidade Federal de São Paulo -
Optical coherence tomography (OCT) angiography of central retinal artery occlusion in the patent cilioretinal artery: a case report
Here we report the case of a 78-year-old male patient with a 2-day history of low visual acuity and fundus and who was diagnosed with central retinal artery occlusion. In addition, the patient had an allergy to fluorescein. A fundus examination of the left eye found a pink optic disc with blurred margins, diffuse pallor in the retina with arterial attenuation, and a normal band of the retinal area in ...Read Full ArticleMentions: Universidade Federal de São Paulo -
Choriocapillaris and retinal vascular plexus density of diabetic eyes using split-spectrum amplitude decorrelation spectral-domain optical coherence tomography angiography
Background/aims Split-spectrum amplitude decorrelation angiography for spectral-domain optical coherence tomography has enabled detailed, non-invasive assessment of vascular flow. This study evaluates choriocapillaris and retinal capillary perfusion density (CPD) in diabetic eyes using optical coherence tomography angiography (OCTA). Methods Records of 136 eyes that underwent OCTA imaging at a single institution were reviewed. Eyes were grouped as non-diabetic controls (37 eyes), patients with diabetes mellitus (DM) without diabetic retinopathy (DM ...Read Full Article -
Anterior segment optical coherence tomography findings in type I Boston keratoprosthesis
Purpose: To report the results of high-resolution anterior segment optical coherence tomography of patients implanted with a type 1 Boston keratoprosthesis (KPro). Methods: The retrospective study cohort included 11 eyes of 11 patients (average age, 58.4 years; range, 34-83 years). All subjects underwent anterior segment optical coherence tomography at a single posteoperative time point. The main outcome measures were retro-backplate and retro-optic membrane formation, thinning and gap formation of ...Read Full ArticleMentions: Universidade Federal de São Paulo -
Comparison of anterior segment optical coherence tomography angiography and fluorescein angiography for iris vasculature analysis
Purpose The aim of this study is to perform imaging of irises of different colors using spectral domain anterior segment optical coherence tomography angiography (AS-OCTA) and iris fluorescein angiography (IFA) and compare their effectiveness in examining iris vasculature. Methods This is a cross-sectional observational clinical study. Patients with no vascular iris alterations and different pigmentation levels were recruited. Participants were imaged using OCTA adapted with an anterior segment lens and ...Read Full ArticleMentions: Universidade Federal de São Paulo -
CHOROIDAL NEOVASCULARIZATION ASSOCIATED WITH RETINAL PIGMENT EPITHELIAL TEAR IMAGED BY OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY
Purpose: To report a patient presenting a retinal pigment epithelial tear in which optical coherence tomography angiography enabled the visualization of subfoveal choroidal neovascularization (CNV) not evidenced by the fluorescein angiography. She was treated with 3 monthly intravitreous anti-VEGF injections and intraretinal fluid resolution occurred. Methods: Observational case report. Results: A 62-year-old Caucasian woman presented with decreased visual acuity in the right eye for 3 months. Fundus biomicroscopy revealed a ...Read Full ArticleMentions: Universidade Federal de São Paulo -
Measurement of the hypotenuse of the vertical optic nerve head cup with spectral-domain optical ...
...Paulo Augusto de Arruda Mello1 1Department of Ophthalmology, Paulista School of Medicine, São Paulo Hospital, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil; 2Department of Ophthalmology, Universidade...Read Full ArticleMentions: Universidade Federal de São Paulo -
Polypoidal Choroidal Vasculopathy on Swept-Source Optical Coherence Tomography Angiography with Variable Interscan Time Analysis
Purpose : To use a novel optical coherence tomography angiography (OCTA) algorithm termed variable interscan time analysis (VISTA) to evaluate relative blood flow speeds in polypoidal choroidal vasculopathy (PCV). Methods : Prospective cross-sectional study enrolling patients with confirmed diagnosis of PCV. OCTA of the retina and choroid was obtained with a prototype swept-source OCT system. The acquired OCT volumes were centered on the branching vascular network (BVN) and polyps as determined by ...Read Full Article
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