Ophthalmologists use this technique in the early diagnosis of diseases of the vitreoretinal interface (Macular pucker, Macular hole, secondary epiretinal membranes, muscular traction syndrome). This exam is of great value in the differential diagnosis and in the establishment of therapeutic decisions as well as in the postoperative evaluation period.
Another important application is the measurement of the thickness of the retinal nerve fiber layer (RNFL) in the region surrounding the optic disc.
In glaucoma, there is a strong correlation between the changes detected in the OCT and the defects found in the visual fields (Computerized Static Perimetry).
Optical Coherence Tomography is one of the most recent comprehensive tests used in the diagnosis of retinal and vitreous diseases, consisting of cross-sections of the retina and vitreoretinal interface.
This non-invasive test uses a technology similar to ultrasound B, using low coherence light instead of acoustic waves, obtaining structural representations with a much higher resolution (8 microns compared to 150 microns of standard ultrasound).
This technology was developed by Fujimoto at the Massachusetts Institute of Technology, and applied in diagnosis by Puliafito. This new technology has been improved in recent years and with the introduction of the latest model (OCT 3), the use of this complementary examination has been generalized, being nowadays a fundamental examination of the diagnosis, evolution and postoperative control of multiple macular pathologies.