Anterior Segment Tomography with the Cirrus Optical Coherence Tomography

Table 1

Some properties and differences among Visante, Pentacam, and Cirrus OCT are described in detail. Courtesy of Zeiss.

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(I) Visante anterior segment OCT

 (a) Anterior segment

  (i) 6 mm depth by 16 mm width 256 A-Scan per B-Scan

  (ii) 3 mm depth by 10 mm width 512 A-Scan per B-Scan

 (b) Wavelength 1310 nm (infrared, nonvisible light)

(II) Cirrus HD-OCT

 (a) Anterior segment

  (i) Cube: 4×4 mm, 512 A-Scan

  (ii) 5-Line Raster: 3 mm, 4096 A-Scans

 (b) Posterior segment

  (i) Cube: 6×6 mm, 512 A-Scan

  (ii) 5-Line Raster: 9 mm, 4096 A-Scans

 (c) Wavelength 840 nm

(III) Pentacam

 (a) Rotating Scheimpflug Imaging System

 (b) Wavelength 475 nm, blue LED (Info: Ziemer Galilei wavelength 470 nm)

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