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M. Stehouwer, F. D. Verbraak, H. R. de Vries, T. G. van Leeuwen; Scanning Beyond the Limits of Standard OCT: OCT Scans of the Peripheral Retina and the Anterior Chamber Angle With a Slitlamp Integtrated FD-OCT System (SLSCAN-1, Topcon). Invest. Ophthalmol. Vis. Sci. 2010;51(13):330.
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© ARVO (1962-2015); The Authors (2016-present)
Exploring the quality of OCT images of the peripheral retina and anterior chamber angle made through a 3-mirror contactlens and a new FD-OCT device (SLSCAN1, Topcon) integrated into a slit lamp.
Patients with representative lesions, seen in the outpatient clinic of the Academic Medical Center, were scanned through a 3-mirror-contatclens with a Fourier Domain OCT (SLSCAN1, Topcon) integrated into a common slitlamp (SLD light source, central wavelength 830 nm, bandwidth 30 nm, 1024 pixel CCD camera, scan speed 5k A-scans per second, up to 1024 A-scans per b-scan). With the SLSCAN-1, scans can be made of lesions observed during biomicrsoscopy through a handheld lens or a 3 mirror lens. A fast Z-tracking system lines out the correct length of the reference arm and compensates for the dynamic character of the examinaton. Scans of peripheral retinal lesions were both performed with a handheld lens (78D, Volk Superfield) and a 3-mirror contactlens (HAAG-STREIT). Scans of the anterior chamber angle were made through the goniomirror of the 3-mirror contactlens.
Scans of the peripheral retina obtained through a 3-mirror lens were of good quality, showing details of the different layers of the retina. The SLSCAN-1 expands the range of the scanned area of the retina compared to common commercially available OCT-devices. Scans of the anterior chamber angle, made through a 3-mirror lens, visualized iris processes and the triangular trabecular meshwork (slitlamp magnification at 40x).
Good quality scans can be obtained of the peripheral retina and anterior chamber angle through a 3-mirror contact lens with the slitlamp with integrated FD-OCT (SLSCAN1, Topcon). These scans could be of clinical interest in patients with pathology in the peripheral retina or the anterior chamber angle.
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