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題 名 | 酒精、缺氧對飛航夜視力的影響=Effects of Mild Hypoxia and Alcohol on Night Vision |
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作 者 | 溫德生; 陳御群; 司徒國; 蔡大尤; | 書刊名 | 中華民國航空醫學會刊 |
卷 期 | 13:1 1999.12[民88.12] |
頁 次 | 頁39-50 |
分類號 | 412.85 |
關鍵詞 | 直昇機; 缺氧; 酒精; 強光盲目; Helicopter; Hypoxia; Alcohol; Flashblindness; |
語 文 | 中文(Chinese) |
中文摘要 | 軍事直昇機經常在夜間低空飛行,然而,吸煙和座艙的空氣污染有可能使飛行員暴露在輕度的缺氧環境。再者,地面的強光亦可能自寬闊的座艙罩照射到眼睛,導致短暫的強光盲目。吾們必須考慮到這些不利的因素將會損害視覺的敏銳度,或為酒精中毒所惡化。 23位非飛行員的男性受測者,在地面或模擬8,000呎的低壓艙內給予安慰劑或酒精(劑量為0.3公克╱公斤體重),接受歷時2小時的視力測驗。其間,每隔30分鐘測量暗視力的敏銳度、強光暴露後的視覺恢復時間、血氧飽和度、和血中酒精濃度。之後,吾們另對70位的男性飛行員重覆部份的實驗,著重於酒精和缺氧是否有加成作用? 本研究的第一和第二部份的實驗結果皆一致地顯示酒精顯著地損害缺氧時的暗視力,而而,第二部份的實驗結果亦再闡明輕微的缺氧,即可導致強光盲目的恢復時間的延長。吾們認為酒精和缺氧的作用將可提昇暗視力的閾值,以及延長強光盲目的持續時間,這些生理影響皆不利於直昇機飛行員的夜航安全。 |
英文摘要 | Military helicopters mostly fly closed to the ground at night. Nevertheless, cigarette smoking or cockpit contamination might expose aircrews in mild hypoxia. Besides, flashblindness caused by glare could also occur while viewing through the large bubble cockpit. These adverse conditions are considered to jeopardize visual acuity and exacerbated by alcohol intoxication. Each of 23 male subjects (non pilots) was tested in 2-hour experiments, serving each under placedbo and alcohol (0.3g/Kg body wt.) conditions both at ground and simulated altitude (8.000ft). Meanwhile, night vision (NV), recovery time (RT) after glare exposure, blood oxygen saturation, and blood alcohol level were examined at every 30 minutes. Thence forth, we repeated the tests focusing upon the additive effects of mild hypoxia and moderate dose of alcohol on 70 male subjects (helicopter pilots). Both studies consistently demonstrated that alcohol significantly reduced visual functions resisting to the effects of hypoxia throughout the experiment. However, the second study showed that mild hypoxia alone could result in delayed RT right after flashblindness. We conclude that alcohol-hypoxia effects are able to elevate the threshold of NV and prolong the RT of flashblindness, which may endanger helicopter might operations. |
本系統中英文摘要資訊取自各篇刊載內容。