Comparison of Central Macular Thickness Measured by Three OCT Models and Study of Interoperator Variability

Table 1

Description of acquisition protocols for each OCT device.

Instrument	Acquisition protocol
Stratus	Fast macular thickness scan
	Six radial scans (6 lines;
	128 A-scans per line)
	Scan area: 6 mm diameter circle
	Axial resolution (μm): 10
	Transversal resolution (μm): 20
Cirrus	Macular cube
	512 × 128 scans pattern (128 lines;
	512 A-scans per line)
	Scan area: 6 × 6 mm
	Axial resolution (μm): 5
	Transversal resolution (μm): 10
Topcon	3D scan
	512 × 128 scans pattern (128 lines;
	512 A-scans per line)
	Scan area: 6 × 6 mm
	Axial resolution (μm): 6
	Transversal resolution (μm): 20