Table 1 A summary of the centration techniques applied by various commercial laser refractive systems
S. No. | Company | Device | Technique | Applied | Type |
|---|---|---|---|---|---|
1 | Alcon | LadarVision 6000 | Semi-Automated based on on-screen identification of CSCLR | Under the laser | The whole ablation is shifted |
2 | Bausch & Lomb | 217 Zyoptix | Manually based CLR (but not truly CS) | Under the laser | The whole ablation is shifted |
3 | Bausch & Lomb | 317 Teneo | Manually based CLR (but not truly CS) | Under the laser | The whole ablation is shifted |
4 | CustomVis | Pulzar Z1 | Fully-Automated based on limbus registration | Under the laser | The whole ablation is shifted |
5 | iVIS | iRES | Fully-Automated based on iris registration | Under the laser | The whole ablation is shifted |
6 | KATANA | LaserSoft | Manually based CLR (but not truly CS) | Under the laser | The whole ablation is shifted |
7 | KERA | IsoBeam | Manually based CLR (but not truly CS) | Under the laser | The whole ablation is shifted |
8 | LaserSight | AstraScan | Manually based CLR (but not truly CS) | Under the laser | The whole ablation is shifted |
9 | Nidek | Quest | Manually based CLR (but not truly CS) | Under the laser | The whole ablation is shifted |
10 | Novatec | LightBlade | Manually based CLR (but not truly CS) | Under the laser | The whole ablation is shifted |
11 | SCHWIND | ESIRIS | Manually based on Corneal Vertex (numerically taken from diagnosis) | Under the laser | The whole ablation is shifted |
12 | SCHWIND | AMARIS | Manually based on Corneal Vertex (numerically taken from diagnosis) | During treatment planning | Only the optical axis is shifted (even for customized treatments), but the whole ablation remains concentric to the pupil boundaries |
AMARIS 500E | |||||
AMARIS 750S | |||||
AMARIS 1050RS | |||||
16 | VISX | Star S4 IR | Fully-Automated based on iris registration | Under the laser | Only pupil centration is possible |
17 | WaveLight | Allegretto | Manually based CLR (but not truly CS), for large offsets or angles (alpha, kappa, lambda) “in between” | Under the laser | The whole ablation is shifted |
Allegretto-Eye-Q | |||||
EX500 | |||||
Concept1000 | |||||
18 | ZEISS-Meditec | MEL80 | Manually based CLR (but not truly CS), considering contralateral viewing eye to reduce parallax | Under the laser | The whole ablation is shifted |
MEL90 |