OCT What is OCT? Optical Coherence Tomography (OCT) is used to obtain a cross-sectional image of your retina to aid in the diagnosis and treatment your retinal disease. It is similar to a small CT or MRI scan of the eye. ENGLISH RELATED LINKS TESTS AND TREATMENT Retinal Exam Intravitreal Injections Ultrasonography Laser Surgery Oct Fluorescein Angiography OUTPATIENT PROCEDURES VitrectomyScleral Buckling SurgeryPneumatic Retinopexy OurPartners