Table 1.

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

(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)