OCT scan explained

At Scrivens, we prioritise your eye health by ensuring we offer the latest optical care available. That’s why we’ve introduced OCT 3D scanners in over 30 of our branches nationwide. The OCT scan is only an additional £10 on top of the cost of a standard or NHS funded eye test.

What is an OCT scan?

Optical Coherence Tomography, commonly referred to as OCT, is a method by which we can better understand how healthy your eyes are. It’s a quick, non-invasive scan performed during your health screening that occurs just before your eye test.

The OCT scan works like an ultrasound, but rather than using sound waves, it uses light waves. The scan produces a 3D image of the retina at the back of the eye and the different layers within it. Our Optometrists can then examine these deeper layers to get an even clearer understanding of your overall eye health. The imagery produced by the 3D scan can help detect more serious eye conditions up to four years earlier than a standard eye test.

What is the difference between an OCT scan and a standard eye test?

An eye test checks your eye health as well as how well you can see. It also involves taking an image of the back of the eye, but an OCT scan takes this a step further, allowing your Optometrists to look even deeper into your eyes and the structures within them.

The main benefit of having an OCT scan is that it can detect eye conditions and diseases earlier than other eye examinations, including those with no symptoms. Essentially, an OCT gives a clearer indication of the health of your eyes.

Who needs an OCT?

Even if you believe your vision and eye health are perfectly fine, an OCT scan is always beneficial as it is useful for your Optometrists to have this image on file as a baseline so they can monitor any changes over time. At Scrivens, we recommend opting for an OCT scan if you are aged 25 or older as it can identify eye conditions including:

Glaucoma

Age-Related Macular Degeneration

Diabetic Retinopathy

Image of the OCT machine

Frequently Asked Questions

Does my local branch offer OCT?

We currently offer OCT scans in over 30 of our branches nationwide, to check if your local branch currently offers this service, check their optical services on their branch page, give them a call or pop in to ask for more information.

How much is an OCT scan?

Because OCT scans are separate from your eye test, an additional charge of £10 will apply.

What happens during an OCT scan?

  • Step 1 – Our team will register you and check your details, they will ask if you would like them to conduct a 3D OCT scan as part of your eye test.
  • Step 2 – If you opt in, during your health screening, you will be asked to place your chin on the OCT machine and focus on a light within the machine.
  • Step 3 – The scan will then begin taking a photo of the back of each of your eyes. Each eye will take less than 60 seconds.
  • Step 4 – The scan is now complete and your 3D images will be saved to your record, allowing your Optometrist to analyse your results.
  • Step 5 – Your Optometrist will then discuss the results with you. The results can be used to monitor the health of your eyes in future appointments.

How long does an OCT scan take?

The OCT scan itself is over within a matter of seconds. Your results will then be analysed and discussed with you as part of your eye examination.

How often should I get an OCT?

We recommend getting an OCT scan every time you have an eye test. This will allow your Optometrist to compare all of the data on your record and keep track of your eye health.

What does an OCT scan feel like?

Nothing! It’s quick and painless. There will just be a bright flash of light as the picture is taken.

Are there are any side effects as a result of OCT?

The OCT scan works using reflected visible light from a low-power laser. Also, OCT machines have been designed to cease scanning the moment it detects too much light exposure. Therefore, there are no side effects or risks associated with the OCT scan.