The combined OCT/SLO (optical coherence tomography and scanning laser opthalmoscope) instrument for imaging the eye was invented in 1998 by Adrian Podoleanu and David Jackson, and is described in the following patents and papers:
- Optical mapping apparatus with adjustable depth resolution
United States Patent 5975697 · Filed: 11/25/1998 · Published: 11/02/1999
- A. Gh. Podoleanu and D. A. Jackson, Combined Optical Coherence Tomograph and Scanning Laser Ophthalmoscope, Electronics Letters, Vol. 34, No. 11, (1998), pp. 1088-1090.
- A. Gh. Podoleanu, D. A. Jackson, Noise Analysis of a Combined Optical Coherence Tomograph and a Confocal Scanning Ophthalmoscope, Appl. Optics, Vol. 38, (1999), No. 10, pp. 2116 – 2127.
Our first OCT/SLO was an en-face system, where the OCT channel operates based on en-face time domain OCT. After 2002, spectral domain OCT technology took off, and the SLO channel was then paired sequentially with a spectral domain OCT channel. Such a system is now sold by Optos Plc., based on the patent:
The acronym OCT/SLO lives on meaning now different formats of OCT. Spectral domain OCT technology is now so fast, that a fundus image can be created using spectral domain OCT. Several groups have now reported generation of a fundus type image to guide the B-scan imaging based by the spectral domain OCT, and labelled their instruments as OCT/SLO.