| 摘要 |
<p>A laser-based method and apparatus for corneal and intraocular surgery. The preferred method of performing a surface ablation of cornea tissue or other organic materials uses a laser source which has a low ablation energy density threshold and extremely short laser pulses to achieve precise control of tissue removal. The laser beam cross-sectional area is preferably about 10νm in diameter. The preferred laser system includes a broad gain bandwidth laser (102) such as Ti3Al2O3, Cr:LiSrAlf6, Nd:YLF, or similar lasers, with a preferred wavelength of about 830 nm, which is generally transmissive in eye tissue. The invention can be used to excise or photoablate regions within the cornea, capsule, lens, vitreoretinal membrane, and other structures within the eye. The invention provides an improved method of eye surgery which has accurate control of tissue removal, and flexibility of ablating tissue at any desired location with predetermined ablation depth.</p> |
