Review Article
Corneal Epithelial Thickness Mapping: A Major Review
Table 1
Optical coherence tomography devices currently used in corneal epithelial thickness mapping.
| Device name | Technology | Axial resolution (μm) | Wavelength (nm) | Scan diameter (mm) | Speed (A-scan/second)/acquisition time (s) |
| Artemis 2 (Arc scan) [30] | VHF-US | 1 | Ultrasound | 10 | NM/120 to 180 | Anterion (Heidelberg Engineering) [43] | SS-OCT | 10 | 1300 | 7 | 50,000 <1 | Avanti/RTVue (Optovue, Inc) [43] | SD-OCT | 5 | 840 | 6–9 | Avanti: 70,000 RTVue: 26,000 0.58 | Cirrus 5000 (Carl Zeiss Meditec) [44, 45] | SD-OCT | 5 | 840 | 9 | 68,000 NM | MS39 (CSO) [46, 47] | Combined Placido-based topographer and SD-OCT | 3.6 | 845 | 8 | 30,000 NM | REVO NX (Optopol Technology) [48] | SD-OCT | 5 | 830 | 8 | 110,000 0.17 | RS 3000 (Nidek Co) [49, 50] | SD-OCT | 4 | NM | 8 | 53,000 NM |
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NM: not mentioned, OCT: optical coherence tomography, SD: spectral domain, and VHF-US: very high-frequency ultrasound.
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