通过对１５００名全身健康，外眼及视功能正常，１６～２０岁的男青年，在暗室内用隐斜计进行隐斜检查，发现隐斜率为９１％，其中以内隐斜为多见。因为内外隐斜者目测距离与实际距离有差异，在飞行着陆时易出现撞地趋势。据统计，空军飞行员因隐斜停飞者占眼科疾病的７．５１％，居眼科停飞疾病的第三位。因此在招收飞行员体检中认真执行内隐斜≤８△、外隐斜≤４△、上隐斜≤１△的标准。 1500 male body health, external eye and visual function, 16 to 20-year-old male in a dark room with a phoria meter phoria inspection and found that the hidden slope of 91%, of which the implicit oblique is more common. Because of the difference between the visual range of the inside and outside the oblique and the actual distance, prone to crash landing in the flight trend. According to statistics, Air Force pilots due to hiccups accounted for 7.51% of ophthalmic diseases accounted for ophthalmology, ghosting third place. Therefore, pilots in the recruitment of pilots to seriously implement the implicit oblique ≤ 8 △, hidden implicit oblique ≤ 4 △, implicit oblique ≤ 1 △ standard.