Optical Coherence Tomography (OCT) is a non-invasive imaging test, widely used in the field of ophthalmology. It is used for the diagnosis and ongoing treatment pathways, for several ophthalmic conditions.The OCT scan provides the ophthalmologist with a high resolution, cross section image of the ocular tissues at the back of the eye. This information enables the ophthalmologist to evaluate the eye in order to make treatment decisions. The scanning technique uses light waves to achieve high resolution pictures which the ophthalmologist can review at a later date.