| 摘要 |
A method, apparatus and system for ophthalmic surgery, and industrial micro-machining is provided. Unique attributes provided in the tracking system include means for (a) sensing contrast in recognizable large scale boundaries such as the change between the cornea/sclera interface (limbus), thereby to determine the absolute location and orientation of these boundaries, all without having to resort to digital sampling techniques; and (b) dual mode operation of an electronic control system compatible with all analog technologies, substantially increasing the speed of operations over other methods. The tracking system of the invention is at least comprised of illumination souces imaging optics (1), a sensor such as a position-sensitive detector (31), a movable optical element such as a mirror (9), a two-dimensional logic board (40) and a dedicated microprocessor (50), including appropriate signal processing firmware and software. Additional optics can be incorporated to provide interface with other assemblies such as depth tracking, target viewing and/or laser surgery sub-systems. |
