| 摘要 |
A hybrid tracking system is configured to combine the advantages of open loop and close loop tracking systems. The hybrid tracking system employs a position-sensing device in an open loop configuration, while the position-sensing device itself is a 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 is used as the tracking reference.
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