Linklater & Warren
Chislehurst -
020 8295 5131
Linklaters Optometrists
Bexleyheath -
020 8303 4014
Leslie Warren Opticians
Sevenoaks -
01732 452 135

Optical Coherence Tomography (OCT) Scan



Find out more about the OCT scan through Linklater Warren.

Used widely within the Hospital Eye Service, the OCT scan has revolutionised the diagnosis and management of conditions that affect the macular such as Age-related Macular Degeneration (AMD). Similar to having your X-rays taken when you visit your Dentist, the OCT scan allows us to see what is going on below the surface; the OCT takes three-dimensional images of the macula allowing your Optometrist to visualise the detailed structure of this vitally important area of the eye.

The Oct Scan
Images are courtesy of Zeiss

As well as scanning the central area of the retina the OCT is used to analyse the optic nerve. These optic nerve scans allows your Optometrist to detect possible glaucoma changes before they are detectable by other methods. The OCT scan is of additional importance to those patients at a higher risk of glaucoma; we therefore recommend such patients undergo an OCT scan every 1-2 years to monitor for changes that may suggest glaucoma.

Many of our patients (even those with no symptoms or family history) choose to take advantage of the OCT scan for the peace of mind it gives them. It is reassuring to know that your eyes have been examined fully using all the methods available and that nothing has been missed. The OCT scan is quick, non-invasive and painless. The results are available instantly for you to view with your Optometrist who will discuss the findings with you in full.

The OCT scan is an important tool when investigating patients who have or are suspected of having certain eye conditions, such as:

  • Age Related Macular Degeneration (AMD) – the OCT scan is used to distinguish between the untreatable dry form from the more aggressive but treatable wet form of the disease.
  • Macular hole – a small hole at the macular region of the retina.  These can be treatable if detected early enough.
  • Vitreo-macular traction – the jelly within the eye tugs at the macular causing it to distort; this can result in a macular hole.
  • Diabetic maculopathy – a complication of diabetes and the leading cause of blindness amongst people of working age.
  • Cystic Macular Oedema (CMO) – often seen as a complication of cataract surgery, CMO reduces vision but is treatable in most cases.
  • Epiretinal membrane (ERM) – a layer of transparent scar tissue that can grow on the surface of the retina.  This can cause distortion of the underlying retina and reduce vision.


Optical Coherence Tomography (OCT) Scan - Procedure