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用连续CO_2激光器,照射青紫蓝灰兔眼142只.求得平均照射时间1.03秒,角膜损伤阈值ED_(50)(?)5.72W/cm~2(95%可信限5.58～5.85W/cm~2);平均照射0.12秒,ED_(50)(?)10.7W/cm~2(95%可信限10.4～10.9W/cm~2).
The average irradiation time was 1.03 seconds and the corneal injury threshold ED 50 (?) 5.72 W / cm ~ 2 (95% confidence interval 5.58 ~ 5.85 W / cm ~ 2). The mean exposure time was 0.12 seconds and ED 50 (?) 10.7W / cm ~ 2 (95% confidence interval 10.4 ~ 10.9W / cm ~ 2).