Branchburg Eye PhysiciansThe Optical Coherence Tomography (OCT) evaluates the optic nerve, macula, and retinal nevi providing detailed information about the retina. This OCT procedure is used as a modern way of imaging the optic nerves or the macula, which help the doctor assess subtle changes of the retinal fiber layer. OCT testing is ordered by the doctor, depending on your risk factors for developing glaucoma or other diseases of the eye, including macular degeneration and diabetic retinopathy. This test is done at the discretion of your eye doctor.