Excimer ablation design and elliptical transition zones

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Abstract
Myopia and hyperopia. The advantages and disadvantages of elliptical transition zones are demonstrated graphically, with an emphasis on smooth ablation zone design to maximize the optics and biologic tolerance by the eye. Results: The use of an individualized elliptical transition maximizes a circular effective optical zone and can enhance the smoothness of the transition zone while minimizing excessive tissue removal. Conclusion: Elliptical transition zones may improve the optics and biologic tolerance of excimer laser treatments....