| 摘要 |
<p>A hybrid tracking system (600) is configured to combine the advantages of open loop and close loop tracking systems. The hybrid tracking system employs a position-sensing device (601) in an open loop configuration, while the position-sensing device itself is close loop device. A particular application of this tracking system is to track eye movement in a refractive laser surgery. The hybrid-tracking configuration enables optical and mechanical separation of the position-sensing device from the surgical laser beam. As a result, the position-sensing device can be made as a modular device, and the hybrid eye-tracking system can have a relatively large tracking range even when a curved mark such as the limbus (11) is used as the tracking reference.</p> |
