Optical Coherence Tomography (OCT) uses coherent interferometry to construct a cross-sectional view of ocular structures that is accurate to less than 10 microns. Interferometry is the general technique of superimposing, or "interfering" two or more light waves which creates an output wave that is different from the input waves. In OCT, the ocular structure is illuminated with near-infrared radiation, and the reflected waves are superimposed with waves from a reference mirror. The differences between the reflected waves and the reference waves are used to construct cross-sectional views. OCT is non-invasive, and very accurately documents structural abnormalities within ocular tissues.
The OPS Board of Certification offers voluntary certification in OCT imaging. The Optical Coherence Tomographer-Certified (OCT-C) designates an individual who has met the OPS BOC standards of competence in optical coherence tomography. The OPS BOC standards are meant to assure delivery of competent, professional optical coherence tomography services.