oct (optical coherence tomography) test
An optical coherence tomography (OCT) scan is an imaging test that uses low coherence light beams analyse different sections of the human body, obtaining highly precise and reliable pictures of several levels of tissue.
what does oct involve?
An OCT is similar to an ultrasound, however, light waves are used instead of ultrasound waves. For ophthalmology purposes, this procedure is minimally-invasive, and it uses the infra-red laser rays to analyse the retina and cornea, generating precise and high definition pictures. Thanks to the possibility of analysing each tissue section, this exam can identify several conditions, especially those of the macula and of the optic disk. The test takes just a few minutes, during which the specialist will use certain reference points on the optic disk to receive and store the laser beams. The result is an image of all the strata of the retina, allowing the specialist to determine if there are any abnormalities, from which they can formulate a diagnosis.
what is oct for?
In ophthalmology, OCT is used to diagnose and assess the advancement and stage of retinal conditions such as maculopathies, glaucoma, hereditary retinal dystrophies, vitreoretinal diseases and macular oedemas.