Allen R G, Thomas S J, Harrison R F, Zuclich J A, Blankenstein M F
Health Phys. 1985 Nov;49(5):685-92. doi: 10.1097/00004032-198511000-00001.
This study of retinal damage thresholds in the rhesus monkey eye investigated the effects of Nd:YAG laser radiation at four pulsewidths; 4, 30, and 200 ns, and 10 microseconds. The thresholds for induction of minimal ophthalmoscopically visible lesions for the four pulsewidths were 158, 326, 170, and 425 microJ, respectively, incident at the eye in single-pulse exposures. The data are interpreted to imply a flat trend of threshold with pulsewidth over the range of pulsewidths examined, in agreement with maximum permissible exposures quoted in existing laser safety standards. This finding is in contrast with the hypothesis of an anomalous trend of increasing threshold with decreasing pulsewidth which was suggested for the nanosec-microsec pulsewidth range based on the sparse data base previously available.
这项关于恒河猴眼睛视网膜损伤阈值的研究，调查了钕钇铝石榴石（Nd:YAG）激光在四种脉宽（4纳秒、30纳秒、200纳秒和10微秒）下的辐射效果。在单脉冲照射下，眼睛接收到的这四种脉宽诱导最小眼底可见损伤的阈值分别为158微焦、326微焦、170微焦和425微焦。这些数据被解释为意味着在所研究的脉宽范围内，阈值随脉宽呈平稳趋势，这与现有激光安全标准中引用的最大允许照射量一致。这一发现与基于此前稀疏数据库提出的、针对纳秒至微秒脉宽范围的异常趋势假设相反，该假设认为阈值会随着脉宽减小而增加。
