视锥对比敏感度测试在招飞医学选拔中的应用分析

Analysis on the application of cone contrast test in Air Force pilot recruitment

目的探讨视锥对比敏感度测试(cone contrast test,CCT)与假同色图在招飞医学选拔中应用的符合度和可行性。方法分层抽取参加招飞医学选拔的学生116人,均为男性,所有学生进行假同色图和红、绿、蓝视锥对比敏感度检测。根据假同色图检测结果分为正常组、色弱组和色盲组,将CCT低于75分判定为色觉异常,对2种检测结果的符合率进行对比分析。结果假同色图检测结果显示正常组76人、色弱组9人和色盲组31人。招飞医学选拔色觉异常学生主要以红绿色盲和绿色弱为主,表现为红色和绿色CCT评分降低(P=0.012或<0.001)。3组学生蓝色CCT评分差异无统计学意义(P均>0.05)。正常组学生CCT评分均不低于75分(符合率为100%),色盲组学生低于75分比例为29/31(符合率为93.5%),色弱组学生低于75分比例为2/9。结论CCT和假同色图对色盲及正常学生的鉴定结论基本一致,但假同色图对色弱评估符合率较低,故在招飞医学选拔色弱和边缘性色觉异常的学生中应增加CCT评估其色觉功能。

ObjectiveTo explore the feasibility and conformity of cone contrast test(CCT)and pseudoisochromatic plate test applied in medical selection of pilot.MethodsOne hundred and sixteen male students were selected from pilot candidates by stratified sampling method.All students were tested the pseudoisochromatic plate test and the red,green,and blue cone contrast sensitivity and were divided into normal group,color weakness group and color blindness group according to the results of the pseudoisochromatic plate test.The students with a CCT score below 75 were judged as color vision anomalopia.The coincidence rates of the 2 detection results were compared and analyzed.ResultsThere were 76 students in normal group,9 students in color weakness group and 31 students in color blindness group.Students with color vision abnormalities were mainly characterized by red-green color blindness and green color weakness,manifested by a significant decrease in CCT scores of red and green(P=0.012 or<0.001),but there was no significant difference in the blue CCT scores among 3 groups(both P>0.05).The CCT scores of normal students were not less than 75 points,which meant that the compliance rate was 100%.The proportion of students in the color blindness group below 75 points was 29/31(with a conformity rate of 93.5%),while the proportion in the color weakness group was 2/9.ConclusionsThe conclusions of CCT and pseudoisochromatic plate test for identifying color blindness and normal students are basically consistent,but the conformity rate for identifying color weakness assessment by pseudoisochromatic plate test is relatively low.It is suggested that CCT would be the complement for identifying color weakness and marginal color vision abnormalities in the medical selection for pilot.