Mäntyjärvi M
Department of Ophthalmology, University of Kuopio, Finland.
Graefes Arch Clin Exp Ophthalmol. 1991;229(2):145-6. doi: 10.1007/BF00170546.
Red-green colour vision defects were screened in a group of 425 trade school students using Velhagen Pflügertrident pseudoisochromatic plates. Thereafter, the students were examined with the Nagel anomaloscope. Of the 425 students, 31 (7.3%) were found to be colour defectives. Deuteranomalous defects were found in 4.9% of cases; deuteranopic defects, in 0.2%; and protanomalous defects, in 2.1%. There were no protanopic students in the study group. The Velhagen plates found 19 of the 31 defectives (sensitivity, 61.3%); none of the students with normal colour vision were suspected of being colour defectives (specificity, 100%). The sensitivity of the Velhagen plates is not as high as that of other pseudoisochromatic tests. However, the Velhagen Pflügertrident test is easy to use when screening of pre-school-aged children is needed.
使用韦尔哈根-普吕格三叉戟假同色图对一组425名职业学校学生进行红绿色觉缺陷筛查。此后，用纳格尔色盲检查镜对这些学生进行检查。在425名学生中，发现31名（7.3%）存在色觉缺陷。其中，4.9%的病例为绿色弱缺陷；0.2%为绿色盲缺陷；2.1%为红色弱缺陷。研究组中没有红色盲学生。韦尔哈根图发现了31名缺陷者中的19名（灵敏度为61.3%）；色觉正常的学生中无人被怀疑有色觉缺陷（特异性为100%）。韦尔哈根图的灵敏度不如其他假同色图测试高。然而，当需要对学龄前儿童进行筛查时，韦尔哈根-普吕格三叉戟测试使用起来很方便。
