发明申请
- 专利标题: Eye refractive power measurement device
- 专利标题(中): 眼屈光力测量装置
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申请号: US11320983申请日: 2005-12-30
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公开(公告)号: US20070008490A1公开(公告)日: 2007-01-11
- 发明人: Tatsuhiko Nagata , Eishi Aizawa , Tetsurou Nishida
- 申请人: Tatsuhiko Nagata , Eishi Aizawa , Tetsurou Nishida
- 专利权人: RIGHT MFG., CO., LTD.
- 当前专利权人: RIGHT MFG., CO., LTD.
- 优先权: JPJP2003-186191 20030630
- 主分类号: A61B3/10
- IPC分类号: A61B3/10
摘要:
The present invention provides a compound device having an eye refractive power measurement function and an eye accommodation function state measurement function, preventing an increase in size and cost in comparison with a known eye refractive power measurement device, and convenient for the operator even when the measurement type is changed. An eye refractive power measurement device includes a measurement type select switch (30) which selects one of at least two types of measurements including normal refractive power measurement, which measures the refractive power of the subject s eye including spherical power, cylinder power, and astigmatism axis, and eye accommodation function state measurement, which determines a change in the refractive power of the subject s eye for high-frequency components. A refractive power measurement section (40) is a multiple meridian direction refractive power measurement section which can measure the eye refractive power in two or more meridian directions. The multiple meridian direction refractive power measurement section measures the refractive power in at least two meridian directions when performing the normal refractive power measurement. The multiple meridian direction refractive power measurement section measures the refractive power in one predetermined meridian direction when performing the eye accommodation function state measurement.
公开/授权文献
- US07290879B2 Eye refractive power measurement device 公开/授权日:2007-11-06
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