What is optical coherence tomography?

A chest tomogram is a picture of the chest area created by moving the x-ray machine in one direction while moving the recording film the other way. This method blurs structures in front of and behind the area of the chest being studied. This allows for a more detailed view of a specific level within the chest cavity.

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Optical coherence tomography - Wikipedia, the free encyclopedia

Optical coherence tomography (OCT) is an optical signal acquisition and processing method. It captures micrometer-resolution, three-dimensional images from ...

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Tomophase Optical Coherence Tomography Imaging System Gets FDA OK

Dec 15, 2010 ... Tomophase Corporation of Burlington, MA has received 510(K) clearance from the FDA to bring to market its Optical Coherence Tomography ...

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Intracoronary Optical Coherence Tomography and Histology at 1 ...

by Y Onuma - 2010 - Cited by 7 - Related articles

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Tracking Optical Coherence Tomography - Full Text View ...

Jun 19, 2006 ... Tracking Optical Coherence Tomography. This study is currently recruiting participants. Verified by University of Pittsburgh, October 2008 ...

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Optical Coherence Tomography - OCT

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Used to wash out eyes to relieve irritation, discomfort, or itching, or to remove a chemical or foreign material from the eye.

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Glaucoma FAQs

Glaucoma is usually high pressure inside the eye that damages the optic nerve and can result in permanent vision loss. Not all 3 criteria (that is, high pressure inside the eye, optic nerve damage, and vision loss) are required to diagnose glaucoma, however, a diagnosis of glaucoma is certain when all 3 criteria are present.


An optician will usually diagnose myopia following a sight test. The optician will use a letter or symbol chart to record the level of vision and see if lenses are able to correct it to normal.

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Optic glioma
Gliomas are tumors that grow in various parts of the brain. Optic gliomas can affect: One or both of the optic nerves, which carry visual information to the brain from each eye The optic chiasm, the area where the optic nerves cross each other in front of the hypothalamus of the brain An optic glioma may also grow along with a hypothalamic glioma.

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Optic neuritis
Optic neuritis is an inflammation of the optic nerve, the bundle of nerve fibers in your eye that transmits visual information to your brain. Pain and temporary vision loss are common symptoms of optic neuritis.

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Optic nerve atrophy
Optic nerve atrophy is tissue death of the nerve that carries the information regarding sight from the eye to the brain.

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If you are diagnosed with hyperopia, your optician may prescribe glasses or contact lenses to correct your vision. It is usually necessary for your optician to conduct further tests to work out exactly what kind of glasses you need. You may be asked to wear special lenses to look at various charts containing different letters or colours.

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Cataracts, age-related
If you have problems with your vision, you should see your optician (optometrist) or your GP. They may look at your eyes with an instrument called an ophthalmoscope. By shining a bright light into your eye, the ophthalmoscope enables your optician to see inside it.

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Even though floaters are usually harmless and do not affect your vision, it is important that you visit an optometrist (optician) on a regular basis (at least once every two years). You should tell your GP, or your optometrist, if you have the symptoms of floaters.

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Positron emission tomography
A PET scan produces three-dimensional, colour images that show how the tissues inside your body work. PET stands for positron emission tomography.

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Positron emission tomography scan
A PET scan (positron emission tomography) is an imaging test that can help reveal how your tissues and organs are functioning. To show this chemical activity, a small amount of radioactive material must enter your body.

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