Table 3 Summary of AS-OCT devices.

From: Evaluation of different OCT systems in quantitative imaging of human Schlemm's canal

OCT device

CIRRUS

PLEX*

CASIA

Central wavelength (nm)

840

1060

1310

Imaging speed (A-scans/s)

27,000

100,000

30,000

Axial resolution in tissue (µm)

5

6.3

10

Digital pixel number

1213

1536

900

Image depth (mm)

2

3

6

Lateral resolution in air (µm)

20

21

30

Scan area (mm × mm)

4 × 4

4 × 4

8 × 4

Sampling density (fast axis)

512

300 (× 4)

512

Sampling interval (fast axis) (µm)

7.8

13.3

15.6

Sampling density (slow axis)

128

300

64

Sampling interval (slow axis) (µm)

31.3

13.3

62.5

  1. *PLEX was operated with an AS attachment of 20D with a focal length of 50 mm. The 3 × 3 AngioPLEX scan conducts 4-time repetition of B-scan for one location.
  2. Lateral resolution of PLEX was estimated using the formula \(r=0.8\cdot \lambda \cdot f/D\), where the beam diameter D estimated to be 2 mm.