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- Reported cut-off values according to different optical coherence tomography (OCT) machines.
| Machine | Bentaleb-Machkour et al54 | Cochrane review55 | Brown et al56 | Campbell et al57 | Goebel et al58 |
|---|---|---|---|---|---|
| Stratus OCT | 197 μm | 230 μm | 300 μm | 240μm | NA |
| Cirrus HD-OCT | 254 μm | 254 μm | NA | NA | NA |
| Spectralis HRA+OCT | 236 μm | 300 μm | NA | NA | NA |
| OCT 2000 scanner | NA | NA | NA | NA | 230 μm |
OCT: optical coherence tomography, HRA: heidelberg retina angiograph
