OPTICAL COHERENCE TOMOGRAPHY - OCT

OCT "Optical Coherence Tomography" is a modern imaging technique, such as an MRI or CT Scan. It has become invaluable to the modern ophthalmic structure, since in seconds it detects very small changes within the eye, which would otherwise be difficult to detect.

 oct optovueIt is the latest method of imaging and analyzing the macula and the optic nerve system.

With the help of OCT and Optovue's OCT Avanti, we can examine and analyze the anterior and posterior half of the eye which include the ability to examine the cornea, the angle of the anterior chambe, the retinal, and optic nerve. Also with the help of OCT we can now measure the thickness of the cornea, the epithelial thickness mapping, which are very important  tools to diagnose keratoconus at even the earliest of stages.

Macular mapping, optic nerve density, ganglion cell complex thickness and optic nerve fiber density analysis is another area OCT can focus on, which in turn offers the ability to monitor the progression of eye diseases such as dry eye, keratoconus, angle closure glaucom, macular degenerative diseases and diabetic retinopathy, glaucoma etc.

Retinal Angiography

Optovue's OCT Avanti machine, which is what we use during our surgery at "Vayianos Ophthalmology Center", is the only machine that currently performs retinal angiography without intravenous injections and mydriasis. The test takes a few seconds.

Main advantages of OCT technology

  • Extremley fast
  • Painless
  • No risk of infection, allergic reactions, anaphylaxis or nausea since there is no use of medication and nothing touches the eye during the examination
  • A comfortable procedure that doesn't use strong lights
  • Does not require Mydriasis( pupil dilation)
  • Highly effective
  • Shows changes within the eye even at early stages of conditions

OCT offers fast, valid, detailed, qualitative and documented results in cases of diabetic retinopathy, age-related macular degeneration, macular edema, central serous choroidopathy and glaucoma. The SD - OCT Avanti XR - Optovue also has repeatable results, which means that the next time the test is done on a specific individual, the machine will find exactly the same point for comparison. It has the smallest possible required pupil diameter for the test (≥2mm), automatic macular and optic nodule, and results are given in high resolution.

OCT "Optical Coherence Tomography" is a modern imaging technique, such as an MRI or CT Scan. It has become invaluable to the modern ophthalmic structure, since in seconds it detects very small changes within the eye, which would otherwise be difficult to detect.

 oct optovueIt is the latest method of imaging and analyzing the macula and the optic nerve system.

With the help of OCT and Optovue's OCT Avanti, we can examine and analyze the anterior and posterior half of the eye which include the ability to examine the cornea, the angle of the anterior chambe, the retinal, and optic nerve. Also with the help of OCT we can now measure the thickness of the cornea, the epithelial thickness mapping, which are very important  tools to diagnose keratoconus at even the earliest of stages.

Macular mapping, optic nerve density, ganglion cell complex thickness and optic nerve fiber density analysis is another area OCT can focus on, which in turn offers the ability to monitor the progression of eye diseases such as dry eye, keratoconus, angle closure glaucom, macular degenerative diseases and diabetic retinopathy, glaucoma etc.

Retinal Angiography

Optovue's OCT Avanti machine, which is what we use during our surgery at "Vayianos Ophthalmology Center", is the only machine that currently performs retinal angiography without intravenous injections and mydriasis. The test takes a few seconds.

Main advantages of OCT technology

  • Extremley fast
  • Painless
  • No risk of infection, allergic reactions, anaphylaxis or nausea since there is no use of medication and nothing touches the eye during the examination
  • A comfortable procedure that doesn't use strong lights
  • Does not require Mydriasis( pupil dilation)
  • Highly effective
  • Shows changes within the eye even at early stages of conditions

OCT offers fast, valid, detailed, qualitative and documented results in cases of diabetic retinopathy, age-related macular degeneration, macular edema, central serous choroidopathy and glaucoma. The SD - OCT Avanti XR - Optovue also has repeatable results, which means that the next time the test is done on a specific individual, the machine will find exactly the same point for comparison. It has the smallest possible required pupil diameter for the test (≥2mm), automatic macular and optic nodule, and results are given in high resolution.

OCT FACT SHEET

What is an Optical Coherence Tomography (OCT) scan?

OCT is a non-invasive imaging scan that uses light waves to take three-dimensional (3D) images of your retina, which is the light-sensitive layer that lines the back of your eye. There is also a small area of the retina called the macula that contains special light-sensitive cells. The macula allows you to see fine details clearly.

Your doctor can also image your optic nerve and cornea with OCT. Your optic nerve is the nerve that connects your eye to your brain and carries the impulses formed by the retina to the visual cortex of the brain. Diseases like Multiple sclerosis, Parkinson's disease and othe disorders of the central nervous system can be followed up and even can be diagnosed with OCT in their early stages.

With OCT, your doctor is able to see the structures of your eye from the front to the back, and OCT helps your doctor detect the early signs of conditions that might affect your eyesight. OCT scans also help your doctor manage eye diseases that may lead to more permanent damage or even blindness if undiagnosed or left untreated.

What are the benefits of OCT imaging?

OCT is a quick, non-invasive scan and is an important tool used in the diagnosis and management of eye disorders and diseases.

OCT technology gives your doctor sophisticated tools to help him improve the care of your eyes.

How often should you have an OCT eye exam?

Your doctor will discuss with you how often you should have your eyes scanned with OCT to look for changes in your eye health. Generally speaking though, it is recommended that people get a baseline eye disease exam at the age of 40, which is the time when early signs of disease or changes in vision may occur, and when many treatments can have the greatest impact on preserving vision.

OCTA FACT SHEET

What is an Optical Coherence Tomography Angiography (OCTA) scan?

OCTA is the only noninvasive way for your doctor to visualize the blood vessels in your retina. Previously, the only way to visualize these blood vessels was with Fluorescein Angiography (FA), which is a lengthy procedure that requires injections of a contrast dye followed by a series of retinal photographs.

OCTA is done with the same imaging system that is used to do traditional OCT scans. The technician will ask you to look at a fixed target for a few seconds while the system scans your eye. For best results, you should try not to blink while the scan is being taken.

What are the benefits of OCT Angiography imaging?

OCTA is a quick and easy imaging test that is similar to an OCT scan. Because OCTA does not require the injection of a contrast dye, you won’t experience the side effects that may be associated with FA. In addition, OCTA lets your doctor examine individual layers of your retina to see small blood vessels that are not easily seen with fluorescein angiograph.

What is the difference between OCTA and FA?

Both OCTA and FA are done to examine blood vessels in the retina; however, OCTA is a non-invasive test, while FA is ( needs the injection of a dye in the vein). In addition, FA typically requires that your eyes be dilated, whereas dilation is not necessary for OCTA.

FA shows your doctor whether blood vessels in the retina are blocked or leaking over a period of several minutes, while OCT Angiography provides a picture of blood vessels, or lack of blood vessels, at a single point in time. Your doctor may wish to perform both tests, or just one of the tests, to assess your retinal health.

How is OCTA different from OCT?

Traditional OCT scans show the tissue of the retina, which allows your doctor to measure thickness and see abnormalities in the layers of the retina. OCTA shows the vessels of the retina and choroid. Both OCT and OCTA are quick, noninvasive and painless scans that can be performed using the same instrument.

How often should you have an OCTA scan?

OCTA can be done as often as needed. Your doctor will decide how often your eyes need to be scanned to look for changes in the blood vessels.