All Articles from Renata Portella Nunes -Optical Coherence Tomography News

Articles from Renata Portella Nunes

1-5 of 5
1. Spectral-Domain Optical Coherence Tomography Measurements of Choroidal Thickness and Outer Retinal Disruption in Macular Telangiectasia Type 2
  
  Explore Healio.com Feb 24 2015 Ophthalmology
  
  To evaluate subfoveal choroidal thickness (CT) and the extent of outer retinal disruption in patients with macular telangiectasia type 2 (MacTel2) compared with healthy eyes. PATIENTS AND METHODS: In this prospective, observational, cohort study, 62 patients (62 eyes) with Mac-Tel2 and 130 healthy controls (130 eyes) underwent a complete ophthalmological examination, spectral-domain optical coherence tomography (SD-OCT) imaging, and axial length measurements. Patients in the study group also underwent color fundus photography, fundus autofluorescence, and fluorescein angiography. En face SD-OCT imaging was used to assess abnormalities involving the photoreceptor inner segment/outer segment/ellipsoid zone (IS/OS/EZ). RESULTS: After adjusting ...
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  Mentions: Universidade Federal de São Paulo University of Miami
2. Change in drusen area over time compared using spectral-domain optical coherence tomography and color fundus imaging
  
  Explore iovs.org Jan 29 2015 Ophthalmology
  
  Purpose. To investigate the relationship between drusen areas measured with color fundus images (CFIs) and those with spectral-domain optical coherence tomography (SDOCT). Methods. Forty-two eyes from thirty patients with drusen in the absence of geographic atrophy were recruited to a prospective study. Digital color fundus images and SDOCT images were obtained at baseline and at follow-up visits at 3 and 6 months. Registered, matched circles centered on the fovea with diameters of 3 mm and 5 mm were identified on both CFIs and SDOCT images. Spectral-domain OCT drusen measurements were obtained using a commercially available proprietary algorithm. Drusen boundaries on ...
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  Mentions: University of Miami David Geffen School of Medicine Srinivas R. Sadda
3. Change in Drusen Area Over Time Compared Using Spectral Domain Optical Coherence Tomagraphy and Color Fundus Imaging
  
  Explore iovs.org Oct 23 2014 Ophthalmology
  
  Purpose: To investigate the relationship between drusen area measurements from color fundus images (CFIs) and spectral domain optical coherence tomography (SDOCT) datasets. Methods: Forty-two eyes from thirty Patients with drusen in the absence of geographic atrophy were recruited into a prospective study. Digital color fundus images and SDOCT images (CirrusTM HD-OCT) were obtained at baseline and at follow-up visits at 3 and 6 months. Registered, matched circles centered on the fovea with diameters of 3 mm and 5 mm were identified on both the CFIs and the SDOCT images. SDOCT drusen measurements were obtained using a commercially available proprietary algorithm ...
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  Mentions: University of Southern California University of Miami Srinivas R. Sadda
4. OCT Minimum Intensity as a Predictor of Geographic Atrophy Enlargement
  
  Explore iovs.org Jan 11 2014 Ophthalmology
  
  Purpose:To determine whether the minimum intensity of the optical coherence tomography (OCT) A-scans within the retina can predict locations of growth at the margin of geographic atrophy (GA) and the growth rate outside the margin. Methods:OCT scans were analyzed at baseline and 52 weeks. Expert graders manually segmented OCT images of GA. The 52-week follow-up scans were registered to the baseline scan coordinates for comparison. OCT Minimum Intensity (MI) values were studied within a 180-micron margin around the boundary of GA at baseline. Baseline MI values were compared in areas of progression and non-progression of the GA, and ...
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  Mentions: Carl Zeiss Meditec University of Miami
5. Predicting the Progression of Geographic Atrophy in Age-Related Macular Degeneration With SD-OCT En Face Imaging of the Outer Retina
  
  Explore Healio.com Aug 19 2013 Ophthalmology
  
  BACKGROUND AND OBJECTIVE: Spectral-domain optical coherence tomography (SD-OCT) en face imaging was used to measure the growth of geographic atrophy (GA) and identify baseline anatomic changes in the outer retina in eyes with nonexudative age-related macular degeneration (AMD). PATIENTS AND METHODS: In this prospective study, eyes were imaged using 200 × 200 and 512 × 128 A-scan raster patterns. Outer retinal anatomy was visualized using en face imaging of a 20-μm thick slab encompassing the inner segment/outer segment (IS/OS) band. RESULTS: En face SD-OCT imaging of the IS/OS region revealed a bilaterally symmetrical pattern of outer retinal disruption ...
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  Mentions: Universidade Federal de São Paulo University of São Paulo Carl Zeiss Meditec
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