Clarke C, Duff J
Br Med J. 1976 Aug 28;2(6034):495-7. doi: 10.1136/bmj.2.6034.495.
During the 1975 British Everest Expedition, which made the first ascent of the south-west face, observations were made in relation to mountain sickness and the appearance of retinal changes. Two Sherpas with cerebral oedema and one Briton with pulmonary oedema were treated. Retinal haemorrhages occurred in four out of six Britons who were newcomers to altitudes over 6000 m (19 685 ft) but in only two out of 14 Britons who had previously visited these altitudes. Intraocular pressures during ascent to 6000 m were within normal limits. The relevance of the ocular findings to acclimatisation in previous years was examined, the results supporting the hypothesis of a "carry-over" effect from previous visits to high altitude.
在1975年英国珠穆朗玛峰探险队首次从西南面登顶期间，对高山病和视网膜变化的出现进行了观察。两名患有脑水肿的夏尔巴人和一名患有肺水肿的英国人接受了治疗。在6名初到海拔超过6000米（19685英尺）高度的英国人中，有4人出现视网膜出血，但在之前曾到访过这些高度的14名英国人中，只有2人出现视网膜出血。在上升到6000米的过程中，眼压在正常范围内。研究了这些眼部检查结果与前几年适应过程的相关性，结果支持了前次前往高海拔地区存在“延续”效应的假说。
