초록 ▼

A cornea laser-cutting apparatus adapted for use in cutting out a cornea of patient\s or donor\s eye in full thickness cornea transplanting surgery or keratoplasty. The cornea laser-cutting apparatus comprises an HF or Er-YAG laser source and a projection optical system for converging laser beams ra

A cornea laser-cutting apparatus adapted for use in cutting out a cornea of patient\s or donor\s eye in full thickness cornea transplanting surgery or keratoplasty. The cornea laser-cutting apparatus comprises an HF or Er-YAG laser source and a projection optical system for converging laser beams radiated from the laser source in a ring-like shape on the cornea, and includes an axicon lens or mirror movably mounted for varying the size of the ring-like shape.

대표청구항 ▼

A cornea laser-cutting apparatus comprising: means for generating laser beams; means for projecting said laser beams onto a cornea to cut the cornea, said projecting means having an optical axis thereof; means for converging and focusing the laser beams onto an imaging plane substantially coincident

A cornea laser-cutting apparatus comprising: means for generating laser beams; means for projecting said laser beams onto a cornea to cut the cornea, said projecting means having an optical axis thereof; means for converging and focusing the laser beams onto an imaging plane substantially coincident with the surface of the cornea; axicon lens means, disposed between said converging means and said imaging plane along said optical axis, for converting the laser beams exiting from said converging means into annularly shaped laser beams impinging on the cornea; and means for moving said axicon lens means along said optical axis to change the diameter of the annularly shaped laser beams impinging on the cornea.