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H. de Vries, F. D. Verbraak, R. de Kinkelder, T. G. van Leeuwen; To Image the Posterior and Anterior Segment of the Human Eye, Using a Slitlamp Integrated FD-OCT Device. Invest. Ophthalmol. Vis. Sci. 2009;50(13):5802.
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© ARVO (1962-2015); The Authors (2016-present)
To present results of OCT images of the posterior and anterior segment of the eye using a new FD-OCT device integrated into a slit lamp.
Patients, seen in the outpatient clinic of the Academic Medical Center, were scanned with a newly developed OCT scanning device, integrated into a common slit lamp (see figure). The OCT is a Fourier Domain OCT system (SLD light source, central wavelength 830 nm, bandwidth 30 nm, 1024 pixel CCD camera, scan speed 5k A-scans per second, 1024 A-scans per B-scan). Simultaneously the tissue can be observed with the slit lamp and a color fundus photography of the observed area is made at the same time (Topcon camera DC1, resolution = 3.24 Mp). The system allows 2-dimensional scan patterns, adaptation of the scanning width (using the optical arrangement of the slit lamp and the software) and is equipped with a fast auto-z for easy searching and locking of the retina. The posterior segment scans have been captured using a standard indirect ophthalmic lens (Volk).
For posterior segment imaging, the flexible optical arrangement of the slit lamp and the hand-held lens (Volk), allows the user to probe large areas of the retina (>45 degrees), depending on the pupil size of the patient. In all patients the macula and optic disk could be visualized without any difficulty. In the anterior segment mode, the OCT system allows imaging of the cornea, anterior chamber, iris and parts of the lens. The scan patterns in different directions allows easy probing of a whole area (multiple B-scans within a bandwidth of few millimeters). Examples of scans made are shown in the figures.
The images made by the slit lamp integrated FD-OCT, could be very useful to examine patients directly during regular slit lamp examinations, for both the posterior and anterior segment of the human eye.
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