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首页> 外文会议>International laser safety conference : Conference program amp; proceedings >DAMAGE THRESHOLD FROM LARGE RETINAL SPOT SIZE REPETETIVE-PULSE LASER EXPOSURES
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DAMAGE THRESHOLD FROM LARGE RETINAL SPOT SIZE REPETETIVE-PULSE LASER EXPOSURES

机译：大型视网膜斑点重复性脉冲激光照射造成的损伤阈值

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摘要

We have measured the retinal damage threshold for a large spot size, multiple-pulse exposure to a Q-switched, frequency-double Nd:YAG laser (532 nm, 7 ns pulses). A 500 μm diameter retinal beam spot was used. The ED_(50), expressed as the per-pulse energy, varies only weakly with the number of pulses, n, for this extended spot size. The previously reported threshold for a multiple-pulse exposure for a 900 μm retinal spot size also shows the same weak dependence on the number of pulses. The multiple-pulse ED_(50) for an extended spot-size exposure does not follow the n~(-1/4) dependence exhibited by small spot size exposures produced by a collimated beam.
机译：我们已经测量了大光斑尺寸，多脉冲对Q开关，倍频Nd：YAG激光（532 nm，7 ns脉冲）的视网膜损伤阈值。使用直径为500μm的视网膜束斑。 ED_（50）表示为每个脉冲的能量，对于此扩展的光斑大小，仅随脉冲数n的变化很小。先前报道的900微米视网膜斑点大小的多脉冲暴露阈值也显示出对脉冲数的弱依赖关系。用于扩展光斑尺寸曝光的多脉冲ED_（50）不遵循由准直光束产生的小光斑尺寸曝光所表现出的n〜（-1/4）依赖性。

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