What is spectral domain OCT?
The new spectral-domain (SD) OCT devices include a spectrometer in the receiver that analyzes the spectrum of reflected light on the retina and transforms it into information about the depth of the structures according to the Fourier principle.
What is SLO OCT?
To obtain an image using SLO, a near infrared laser is directed at the eye, illuminating a specific part of the retina. Optical coherence tomography (OCT) technology uses a single infrared laser to illuminate the retina and create cross-sectional images of each of its layers.
What is confocal scanning laser ophthalmoscopy?
Confocal scanning laser ophthalmoscopy is a non–invasive investigation that has been used initially to receive three–dimensional images of the retinal surface in vivo. Heidelberg Retina Tomograph is designed to scan the retinal surface with a diode laser, which has a wavelength of 670 nm.
What is the advantage of spectral domain OCT over time domain OCT?
Spectral domain OCT displays greater detail of retinal layers. Through the use of a broader light source, SD-OCT may yield up to a 3m axial resolution image. Spectral domain technology allows for unprecedented image capture speed and resolution, along with improved analytic capability.
What is another name for spectral domain OCT?
SD- OCT is also known as Fourier domain OCT because the distances are encoded in the Fourier transform of the frequencies of light reflected.
How much does optos Monaco cost?
The full-purchase price is about $85,000. I like to lease with a dollar buy-out to avoid using all the cash in the practice. I need to capture 38 patients a month to break even, but my average profit per month is over $9,000 making this a very profitable center in my office.
How does scanning laser ophthalmoscopy work?
SLO utilizes horizontal and vertical scanning mirrors to scan a specific region of the retina and create raster images viewable on a television monitor. While it is able to image the retina in real time, it has issues with reflections from eye astigmatism and the cornea.
What is the difference between time domain and spectral domain OCT?
In time domain OCT, the depth information of the retina is collected as a function of time by moving the reference mirror. The reference mirror in spectral domain OCT, in contrast, is stationary. The light spectrum from the interferometer is detected by a spectrometer.
How to compare Stratus Oct and spectral domain SLO / Oct?
To compare retinal thickness and volume measurements obtained with Stratus time domain optical coherence tomography (OCT) and spectral domain scanning laser ophthalmoscope OCT (SD-SLO/OCT).
Which is better SD-SLO / OCT or stratus TD-OCT?
SD-SLO/OCT produced fewer artefacts than Stratus TD-OCT. This could be attributed to the greater resolution and acquisition speed of SD-SLO/OCT. The macular retinal thickness values measured with SD-SLO/OCT were significantly higher than those measured with Stratus TD-OCT.
When to use time domain OCT vs spectral domain OCT?
Examination with time domain OCT and spectral domain OCT was performed on each eye on the same day and by the same examiners (RF or GC).
How is Oct used in optical coherence tomography?
Traditional optical coherence tomography (OCT) is a time domain OCT (TD-OCT), 1, 2, 3, 4 where depth informations of the retina are obtained after a longitudinal translation in time of a reference arm.