How does an OCT scan assist in early detection of Glaucoma?

January 26, 2017

A common question from patients, explained by our Optometrist Alex…

Glaucoma is an eye disease that leads to loss of the retinal nerve fibre layer. Traditional methods for detecting Glaucoma are eye pressures, looking at the back of the eye (retina and optic nerve head) and visual fields. Using these techniques, sometimes over 50% of the nerve fibre layer has been lost before the disease is picked up. With an OCT scan, we are able to measure the thickness of the retinal nerve fibre layer from year to year. Any sign of reduction can lead to early diagnosis of Glaucoma; 10 years earlier in some cases.

Some people are at risk of an Angle Closure Glaucoma. This occurs in the anterior segment of the eye (front of the eye). The OCT allows us to do a scan of the anterior segment so we can easily assess whether you are at risk of an angle closure Glaucoma.

If you have a family history of Glaucoma, we recommend having an OCT scan every year as part of your annual eye care routine.

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