Purchase this article with an account.
C.M. Novalis, D. Orlock, J. Slakter, L. Yannuzzi, R. Spaide; Optical Coherence Tomography Imaging of Retinal Pathology Utilizing the Topcon 3D–OCT System . Invest. Ophthalmol. Vis. Sci. 2006;47(13):4026.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
To evaluate the utility of Topcon 3D–OCT (Topcon Corp., Tokyo Japan), Fourier Domain OCT for clinical evaluation of retinal pathology.
The Topcon 3D–OCT Fourier domain  optical coherence tomography machine records the interferometric information using a spectrometer approach instead of moving mirrors used in conventional OCT systems, allowing for an increase in both the scanning speed (25,000 A–scan/sec) and imaging sensitivity (>92 dB). Thru an integration with the Topcon non–mydratic retinal camera, the Topcon 3D OCT provides high resolution cross sectional (B–scan) and coronal (C–scan) images of the posterior fundus. In addition, the system utilizes a near–infrared, low coherence solid–state light source, achieving excellent axial (6 um) and lateral (10 um) resolution. In the cross–sectional (2D) imaging mode, an OCT image can be obtained <0.027 seconds, reducing potential eye movement artifact.
Forty eyes of 20 patients with retinal disease were imaged with the Topcon 3D–OCT using cross sectional scans . The authors reviewed the images with respect to their subjective and objective quality. The images of these patients were compared to images from the Stratus OCT (Carl Zeiss Meditec Inc. ) and found to be of similar diagnostic value. Ten eyes of 10 patients were scanned using the volumetric (3D) imaging mode, used to evaluate retinal thickness. A 10o x10o retinal area was scanned, and 3D volumetric retinal reconstructions of the area were obtained using comprehensive 3D data rendering software. This approach was useful in visualizing and measuring the retinal thickness.
The Topcon 3D–OCT provided useful OCT imaging in retinal diseases in both the cross sectional (B–scan ) and the coronal (C–scan ) modes. Further clinical studies are planned to determine the clinical utility of this instrument.
This PDF is available to Subscribers Only