What does an OCT scan do?

An OCT scan is a non-invasive imaging technique used by optometrists to examine the layers beneath the surface of the eye. Unlike a fundus image that captures a 2D photo of the external part of the eye. An OCT scan produces a 3D image that slices through the layers of the eye, similar to how a cake can be sliced to reveal its layers. At Specialeyes Eyecare, experienced optometrists use OCT scans to measure the thickness of retinal layers, which can aid in the early detection of sight-threatening eye conditions and the diagnosis of glaucoma before symptoms appear.

Who needs an OCT scan?

OCT scans are recommended for people over the age of 25 who want to monitor their eye health, particularly those with diabetes, glaucoma, or a family history of eye disease. Even if your eyes are healthy, it's still beneficial to get an OCT scan with every eye exam to establish a baseline image for future comparison. This allows optometrists to track any changes over time and identify early signs of eye diseases that can be managed before they worsen, potentially preventing vision loss.

What is the price of an OCT scan?

While most opticians charge for this service as it is not a part of a standard eye examination, at Specialeyes Eyecare in West London, an OCT scan is included for free with every sight test.

Is an OCT scan more time-consuming than a regular eye exam?

No, an OCT scan takes only a few seconds, and the optometrist will go over the results with you during the eye exam.

What is the purpose of an OCT scan and which conditions can it identify?

The main goal of an OCT scan is to check the health of your eyes and monitor changes over time. It is especially useful for detecting eye conditions that can harm your eyesight but do not present symptoms until they begin to affect your vision. OCT scans can detect conditions such as glaucoma, diabetic retinopathy, retinal detachment, age-related macular degeneration, and macular holes.

What is the process of an OCT scan?

An OCT scan uses light to capture more than 1,000 images of the back of your eye and beyond, all the way back to the optic nerve, in just a few seconds. It creates a layered image that provides an accurate view of your eye structures, allowing us to assess your eye health. The images are stored to track changes over time.

If I have a diabetic checkup every year, do I still need an OCT scan?

Yes, you should still have an OCT scan even if you have a diabetic eye screening test every year. A fundus photograph is taken during the diabetic eye check, which is an image of the surface of the retina. In contrast, OCT scans allow optometrists to see the layers beneath the retina's surface, identifying changes in eye health earlier than if they only looked at the surface. OCT scans can also identify various other eye problems, not limited to diabetes.

In summary, an OCT scan is a valuable tool for assessing eye health that provides optometrists with a detailed look at the layers beneath the surface of the eye. It is recommended for people of all ages, particularly those with a history of eye disease or those who want to monitor their eye health. An OCT scan can aid in the early detection of eye conditions and help prevent vision loss.

Feb 11, 2023  Written by Hayder  What does an OCT scan do?