Research of cornea section's shape ablated by 193-nm ArF laser spots

• 作 者: 朱志强 余吟山 邓国庆
• 机 构: Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences Hefei 230031,Anhui Institut
• 出 处: Chinese Optics Letters
• 发表日期: 2005年11期
• 关键词: cornea ablation spots deciding steps sections smoothness curvature arbitrary sha

The ablation theory of cornea and biology effect by 193-nm ArF excimer laser are introduced. The ablation tracks model is put forward to make laser spots scan around cornea by many steps and many areas to change cornea curvature. The corneal average ablation curve is calculated by software so as to explain the feasibility of the ablation tracks model. By analyzing the actual ablation shapes of many arbitrary cornea sections, the optimal ablation method for deciding the random position of every laser spot in every ablation track is obtained. Experiments combining the ablation model with the device testify the energy stability of laser spots and the accuracy of rectifying anisometropia.

The ablation theory of cornea and biology effect by 193-nm ArF excimer laser are introduced. The ablation tracks model is put forward to make laser spots scan around cornea by many steps and many areas to change cornea curvature. The corneal average ablation curve is calculated by software the software to explain the feasibility of the ablation tracks model. By analyzing the actual ablation shapes of many arbitrary cornea sections, the optimal ablation method for deciding the random position of every laser spot in every ablation track is obtained. model with the device testify the energy stability of laser spots and the accuracy of rectifying anisometropia.