Beam Delivery System For UV Laser Ablation Of The Cornea

We describe an electro-optical apparatus capable of delivering a homogenized, intensity-contoured 193 nm wavelength laser beam to the anterior surface of the cornea. Beam fluence is adequate to produce controlled ablation over areas as large as 7 mm diameter. Preliminary experimental results demonstrating recontouring of the corneal surface as a means of correcting myopia are presented. Means to be used for reducing hyperopia and astigmatism also are described.

[1]  W. Veldkamp,et al.  Compact, collinear, and variable anamorphic-beam compressor design. , 1982, Applied optics.

[2]  R. Srinivasan,et al.  Ablation of polymers and biological tissue by ultraviolet lasers. , 1986, Science.

[3]  Paul R. Yoder,et al.  Characterization Of UV Laser Beams Using Fluorescence , 1988, Photonics West - Lasers and Applications in Science and Engineering.

[4]  F Hillenkamp,et al.  Excimer laser ablation of the cornea and lens. Experimental studies. , 1985, Ophthalmology.

[5]  Paul R. Yoder,et al.  Corneal Sculpting Using An Excimer Laser Delivery System , 1988, Photonics West - Lasers and Applications in Science and Engineering.