| 题名: | Measurement of corneal topography through Hartmann-Shack wave-front sensor |
| 作者: | Yang Jinsheng; Rao Xuejun; Rao Changhui
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| 出版日期: | 2009
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| 会议名称: | Proceedings of SPIE
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| 会议日期: | 2009
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| 通讯作者: | Yang Jinsheng
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| 中文摘要: | A corneal topography based on Hartmann-Shack Sensor is presented in this paper. In the system, the focus of an objective lens is precisely positioned on cornea's curve center. Wave-front of the reflecting beam can be measured by the Hartmann-Shack sensor which is conjugate to the cornea plane. If the corneal surface is a perfect sphere, wave-front detected by the Hartmann-Shack sensor is a plane. As a result, data measured by Hartmann-Shacks sensor is the deviation between the sphere and the real cornea surface. This paper describes a methodology for designing instrument based on Hartmann-Shack sensor. Then, applying this method, an instrument is developed for accurate measurement of corneal topography. In addition, measuring principle of Hartmann-Shack sensor which determined system parameters is also introduced. Repeatability is demonstrated by a series of data. The instrument was able to accurately measure simulative cornea's reflective aberrations, from which corneal topography and corneal refractive aberrations were derived. |
| 英文摘要: | A corneal topography based on Hartmann-Shack Sensor is presented in this paper. In the system, the focus of an objective lens is precisely positioned on cornea's curve center. Wave-front of the reflecting beam can be measured by the Hartmann-Shack sensor which is conjugate to the cornea plane. If the corneal surface is a perfect sphere, wave-front detected by the Hartmann-Shack sensor is a plane. As a result, data measured by Hartmann-Shacks sensor is the deviation between the sphere and the real cornea surface. This paper describes a methodology for designing instrument based on Hartmann-Shack sensor. Then, applying this method, an instrument is developed for accurate measurement of corneal topography. In addition, measuring principle of Hartmann-Shack sensor which determined system parameters is also introduced. Repeatability is demonstrated by a series of data. The instrument was able to accurately measure simulative cornea's reflective aberrations, from which corneal topography and corneal refractive aberrations were derived. |
| 收录类别: | Ei
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| 语种: | 英语
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| 卷号: | 7160
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| 文章类型: | 会议论文
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| 内容类型: | 会议论文
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| URI标识: | http://ir.ioe.ac.cn/handle/181551/7728
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| Appears in Collections: | 自适应光学技术研究室（八室）_会议论文
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| 2009-038.pdf（383KB） | 会议论文 | -- | 限制开放 | | View
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| Recommended Citation: | |
Yang Jinsheng,Rao Xuejun,Rao Changhui. Measurement of corneal topography through Hartmann-Shack wave-front sensor[C]. 见:Proceedings of SPIE. 2009.
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