1. Universidade Federal de São Paulo

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    1. Mentioned In 67 Articles

    2. Novel application of anterior segment optical coherence tomography for periocular imaging

      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 ...
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    3. Retinal nerve fiber layer analysis in cocaine users

      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 ...
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    4. Repeatability of Split-Spectrum Amplitude-Decorrelation Angiography to Assess Capillary Perfusion Density Within Optical Coherence Tomography

      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 ...
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    5. OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY FINDINGS IN ACUTE RETINAL NECROSIS

      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 ...
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    6. Optical coherence tomography (OCT) angiography of central retinal artery occlusion in the patent cilioretinal artery: a case report

      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 ...
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    7. Choriocapillaris and retinal vascular plexus density of diabetic eyes using split-spectrum amplitude decorrelation spectral-domain optical coherence tomography angiography

      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 ...
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    8. Anterior segment optical coherence tomography findings in type I Boston keratoprosthesis

      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 ...
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    9. Comparison of anterior segment optical coherence tomography angiography and fluorescein angiography for iris vasculature analysis

      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 ...
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    10. CHOROIDAL NEOVASCULARIZATION ASSOCIATED WITH RETINAL PIGMENT EPITHELIAL TEAR IMAGED BY OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY

      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 ...
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    11. Polypoidal Choroidal Vasculopathy on Swept-Source Optical Coherence Tomography Angiography with Variable Interscan Time Analysis

      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 ...
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    12. In vivo analysis of glaucoma-related features within the optic nerve head using enhanced depth imaging optical coherence tomography

      In vivo analysis of glaucoma-related features within the optic nerve head using enhanced depth imaging optical coherence tomography
      Structural differences between optic nerve head (ONH) parameters in glaucomatous and non-glaucomatous eyes has been documented, however the association between such parameters in patients with different disease stages is yet to be elucidated. We investigated the relationship between different laminar and prelaminar ONH structures using enhanced depth imaging spectral-domain optical coherence tomography (EDI OCT) in a population with and without glaucoma. In this observational case-control study, we prospectively enrolled healthy ...
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    13. Combination of anterior segment optical coherence tomography modalities to improve accuracy of rectus muscle insertion location - ScienceDirect

      Combination of anterior segment optical coherence tomography modalities to improve accuracy of rectus muscle insertion location - ScienceDirect
      Anterior segment optical coherence tomography (AS-OCT) is useful for locating the extraocular muscle insertion prior to strabismus surgery; however, its accuracy decreases in reoperations. This masked retrospective study investigated whether a combination of AS-OCT modalities improves accuracy. The distance between the corneoscleral limbus and extraocular muscle insertion was measured with AS-OCT, first using the standard grayscale modality alone and then refined with the color modality. The AS-OCT measurement was considered ...
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    14. Comparisons of choroidal nevus measurements obtained using 10- and 20-MHz ultrasound and spectral domain optical coherence tomography

      Comparisons of choroidal nevus measurements obtained using 10- and 20-MHz ultrasound and spectral domain optical coherence tomography
      Purpose: To compare measurements of lesions clinically diagnosed as choroidal nevi using spectral domain optical coherence tomography (SD-OCT) and 10- and 20-MHz ultrasound (US). Methods: This prospective study, which was conducted between May 2011 and December 2011, evaluated eyes diagnosed with choroidal nevus via photographic documentation using 10- or 20-MHz A- and B-mode US (experienced examiner using both the transpalpebral technique and direct contact) or SD-OCT in the enhanced depth ...
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    15. Large colloid drusen analyzed with structural en face optical coherence tomography

      Large colloid drusen analyzed with structural en face optical coherence tomography
      Drusen are extracellular deposits between the basal lamina of the retinal pigment epithelium (RPE) and the inner collagenous layer of Bruch's membrane. Large colloid drusen (LCD) are located below the RPE and are characterized by multiple, large, dome-shaped RPE detachments, with marked attenuation of the ellipsoid zone overlaying the drusen. This report presents the structural en face optical coherence tomography (OCT) findings of LCD and relates them to findings ...
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  2. About Universidade Federal de São Paulo

    Universidade Federal de São Paulo

    Universidade Federal de São Paulo plays a strategic role in the global progress of nations and constitutes an essential pillar in developing countries.  A university with a solid structure is one of the main foundations of national autonomy. Thus, every country that aims at being self-sufficient has to generate its own knowledge and avoid relying on imported technology.  The importance of research must be emphasized since it is the basis for a promising future.