What is OCT angiography used for?
Optical coherence tomography angiography (OCT-A) has emerged as a non-invasive technique for imaging the microvasculature of the retina and the choroid.
How do you read an OCT scan?
Interpretation of the OCT image requires understanding that the image was based on light waves. Thus, the image is subject to the characteristics of light waves, and one can see reflections, attenuations, interfaces, and shadows in the image due to this property of light.
What is retina OCT?
OCT is an imaging tool for capturing high-resolution, cross-sectional images of the back of your eye. A noninvasive laser obtains images of the layers of the retina and optic nerve. These help your optometrist identify and diagnose eye diseases. OCT is similar to an ultrasound, but it uses light instead of sound.
What is Spectralis?
The SPECTRALIS® is an expandable diagnostic imaging platform which combines scanning laser fundus imaging with high-resolution OCT.
What is Cirrus HD OCT?
The Cirrus HD-OCT (Carl Zeiss Meditec, Dublin, CA) device is a spectral-domain optical coherence tomography system that allows faster data acquisition than the previous generation StratusOCT (Carl Zeiss Meditec, Dublin, CA), which is a time-domain device.
What is normal retinal thickness?
The mean ± SD central foveal thickness was manually measured as 170 ± 18 μm, approximately 12 μm less than the value automatically obtained from the OCT3 software….Table 1.
|Region||Retinal Thickness in the Healthy Eves, Mean ± SD|
|Inner ring (1.5-mm radius)|
|Superior||255 ± 17|
What is retinal Angiomatous proliferation?
Retinal angiomatous proliferation (RAP) is defined as a variant of exudative age related macular degeneration (AMD) in which the retinal-choroidal neovascularization is characterized by intraretinal capillary proliferation or, if the origin of the process is in the choroid, then it is an early retinal-choroidal …
What is octa angiography?
Optical Coherence Tomography Angiography, or OCTA, is new, non-invasive approach to visualizing retinal vasculature that is transforming the way physicians see retinal and choroidal vasculature.
What is the clinical utility of OptoVue Oct?
Extensive Clinical Utility. Optovue OCT has a broad range of applications in today’s eye care practices. OCT technology generates high-resolution, cross-sectional and three-dimensional (3D) images of the retina, optic disc and anterior segment, to give you valuable information that aids in the diagnosis and management of a range of ocular diseases.
What is the a-scan rate of the OptoVue AngioVue?
The Optovue Angiovue utilizes SSADA, which splits the spectrum into different, small bands while employing a decorrelation measure. [ 7] With Optovue, a 3x 3-volume scan centered on the fovea was obtained with an A-scan rate of 70kHz.
What is the role of the angioplex in the workup of Oct?
Longer wavelengths are less susceptible to light scattering, which may decrease the presence of projection artefacts in the images of the DCP. The Angioplex uses the so-called OCT-microangiography complex (OMAG), which identifies changes in the phase and intensity information of the OCT scans. [ 7]