Blinking is allowed but the patient must remain as still as possible for the best and quickest images to be captured. Optical Coherence Tomography The APL-OP01 OCT phantom is a device to qualitatively and quantitatively characterize the performance of an Optical Coherence. NOTE: During OCT tests the patient places his or her chin in a chinrest while pressing their forehead to the forehead rest for several minutes each eye. The Anterior Segment OCT test may be used for Some scans are also able to measure the thickness of the cornea and topographical map of the cornea. The OCT test uses a light beam, which is not harmful to the eye, in order to scan and image the front of the eye including the cornea, anterior chamber, the angles in the anterior chamber and the iris. This is a non-invasive test most often performed while the patient is NOT dilated. Optical coherence tomography (OCT) Anterior Segment The Posterior Segment OCT test may be used for: This tracking enables us to not only obtain the highest quality of imagery for each unique eye but also allows us to scan each eye in the exact same area as previous scans, within a degree of one micron, to track for any changes that have occurred. The OCT testing system has the ability to track the blood vessels of the eye of each patient. The backscattered light is measured with an interferometric set-up to reconstruct the depth profile of the sample at the selected location. It typically uses light in the near-infrared spectral range which has a penetration depth of several hundred microns in tissue. Our physicians can read the maps and see if areas of the retina and optic nerve may be thinner or thicker than normal. Optical coherence tomography (OCT) is a non-invasive technique for cross-sectional tissue imaging. The state-of-the-art software used at Wills Eye Hospital allows us to create topographical maps of the eye and compare the data results to a normative database. The light measures the thickness of the macula, retina and optic nerves. The OCT uses a light beam which is not harmful to the eye. This is a non-invasive test most often performed while a patient is dilated, although new software allows for patients to be undilated as needed. Optical coherence tomography (OCT) Posterior Segment
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