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What is the purpose of an OCT test?

Optical Coherence Tomography (OCT) is a commonly performed diagnostic test designed to assist your doctor in identifying retinal diseases, such as age-related macular degeneration (AMD) or diabetic retinopathy (diabetic eye disease).

What happens during an OCT scan?

The machine will scan your eyes using low powered laser light to take images of the structures inside your eye, most commonly your retina – the thin layer of tissue that lines the back of the eye – and your optic nerve. It scans your eye without touching it.

What is retina OCT?

Optical coherence tomography (OCT) is a non-invasive imaging test. OCT uses light waves to take cross-section pictures of your retina. With OCT, your ophthalmologist can see each of the retina’s distinctive layers. This allows your ophthalmologist to map and measure their thickness.

What is OCT test for glaucoma?

Optical coherence topography (OCT) tests obtain a topographical map of the optic nerve, using non-invasive light waves to take cross-section pictures of the retina. An OCT test measures the thickness of the nerve fiber layer, which is the portion of the optic nerve most vulnerable to eye pressure elevation.

Are OCT eye scans worth it?

In particular, an OCT scan can help to detect eye conditions like glaucoma, age-related macular degeneration and diabetic retinopathy. Your optician may recommend that you attend an OCT scan even when your eyes are healthy in order to provide a baseline image.

Are OCT scans worth it?

OCT scans are recommended for people aged 25 or over, who want to know more about their eye health, or those who have diabetes, glaucoma, or have family history of eye disease. Even if your vision and eye health are perfectly fine, we still recommend an OCT scan with every eye test.

What causes sub retinal fluid?

Subretinal fluid (SRF) from the choroid enters the subretinal space through damaged pigment epithelium caused by inflammation or tumour. In the ‘uveal effusion syndrome’ shifting subretinal fluid is the typical feature.

Is there radiation in OCT?

Optical Coherence Tomography is a noninvasive imaging technology used to obtain high resolution cross-sectional images of the retina. OCT uses rays of light to measure retinal thickness. No radiation or X-rays are used in this test, an OCT scan does not hurt and it is not uncomfortable.