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首页> 外文期刊>Aviation, space, and environmental medicine. >Visual and flight performance recovery after PRK or LASIK in helicopter pilots.
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Visual and flight performance recovery after PRK or LASIK in helicopter pilots.

机译：直升机飞行员进行PRK或LASIK手术后视觉和飞行性能恢复。

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INTRODUCTION: Refractive surgery, specifically photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK), is becoming more accepted in the military environment. Determination of the impact on visual performance in the more demanding aviation environment was the impetus for this study. METHODS: A prospective evaluation of 20 Black Hawk pilots pre-surgically and at 1 wk, 1 mo, and 6 mo postsurgery was conducted to assess both PRK and LASIK visual and flight performance outcomes on the return of aviators to duty. RESULTS: Of 20 pilots, 19 returned to flight status at 1 mo after surgery; 1 PRK subject was delayed due to corneal haze and subjective visual symptoms. Improvements were seen under simulator night and night vision goggle flight after LASIK; no significant changes in flight performance were measured in the aircraft. Results indicated a significantly faster recovery of all visual performance outcomes 1 wk after LASIK vs. PRK, with no difference between procedures at 1 and 6 mo. Low contrast acuity and contrast sensitivity only weakly correlated to flight performance in the early post-operative period. DISCUSSION: Overall flight performance assessed in this study after PRK and LASIK was stable or improved from baseline, indicating a resilience of performance despite measured decrements in visual performance, especially in PRK. More visually demanding flight tasks may be impacted by subtle changes in visual performance. Contrast tests are more sensitive to the effects of refractive surgical intervention and may prove to be a better indicator of visual recovery for return to flight status.
机译：简介：屈光手术，特别是光折射角膜切除术（PRK）和激光原位角膜磨镶术（LASIK）在军事环境中正变得越来越被接受。确定在更苛刻的航空环境中对视觉性能的影响是这项研究的动力。方法：对20名黑鹰飞行员进行术前，1 wk，1 mo和6 mo手术后的前瞻性评估，以评估飞行员返回值班时PRK和LASIK的视觉和飞行性能结果。结果：20名飞行员中，有19名在手术后1个月恢复飞行状态; 1名PRK受试者由于角膜混浊和主观视觉症状而延迟。 LASIK手术后，在模拟器的夜视镜和夜视镜的飞行下，情况有所改善。该飞机没有测量飞行性能的重大变化。结果表明，LASIK与PRK术后1周相比，所有视觉性能指标的恢复均显着加快，而1和6 mo时的操作之间无差异。术后早期，低对比敏锐度和对比敏感度仅与飞行性能弱相关。讨论：在这项研究中，PRK和LASIK术后的总体飞行性能相对于基线稳定或有所改善，尽管视觉性能有所下降，但仍表现出弹性，特别是在PRK中。视觉性能的细微变化可能会影响视觉要求更高的飞行任务。对比测试对屈光手术干预的效果更为敏感，可能被证明是恢复飞行状态的视觉恢复的更好指标。

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