*Cirrus OCT (5000 model with version 6.5 software) acquires 68,000 scans per second with fundus photos Spectralis SD-OCT (Heidelberg Engineering) 6 Comparison of Four Commercially Available SD-OCT ModelsĬirrus HD-OCT 5000 (Carl Zeiss Meditec) 2 This article outlines the basics of OCT imaging and walks you through how to analyze retinal nerve fiber layer (RNFL) thickness, macular thickness and ganglion cell complex using each model. The technological growth in ocular imaging has allowed for profound advancements in the clinician’s ability to recognize subtle abnormalities, differentiate stability from progression in ocular pathology and identify disease stages.Ĭlinicians have four prominent commercially available spectral-domain (SD) OCT models to choose from: Spectralis SD-OCT (Heidelberg Engineering), 3D OCT-2000 (Topcon Medical Systems), Avanti RTVue XR (Optovue), and Cirrus HD SD-OCT 5000 (Carl Zeiss Meditec).
Optical coherence tomography (OCT) has evolved over the last several years from a device used in only a few practices to one found in many primary eye care clinics.
