Hammond R S, Schmidt P P
Arch Ophthalmol. 1986 Jan;104(1):54-60. doi: 10.1001/archopht.1986.01050130064021.
The purpose of school vision screenings is to detect those children with vision problems that may impede normal development (eg, amblyopia, refractive error, strabismus, suppression). In a double-blind investigation, 483 schoolchildren, ranging in age from 5 to 13 years, had their vision screened using both the Random Dot E (RDE) stereogram and the Modified Clinical Technique (MCT). The validity of each technique was determined using the phi coefficient and was compared with results of similar reports in the literature for the Modified Clinical Technique, Snellen letter acuity, and vision-screening kits. Our data show that the RDE is more effective than five of six other techniques in identifying those children who need further visual examination. In addition, screening with the RDE can be taught to nonprofessionals in ten minutes or less, can be completed on each child within two minutes, and is inexpensive.
学校视力筛查的目的是检测出那些可能妨碍正常发育的视力问题儿童（如弱视、屈光不正、斜视、抑制）。在一项双盲调查中，对483名年龄在5至13岁的学童使用随机点E（RDE）立体图和改良临床技术（MCT）进行了视力筛查。使用phi系数确定了每种技术的有效性，并与文献中关于改良临床技术、斯内伦视力表视力和视力筛查套件的类似报告结果进行了比较。我们的数据表明，在识别那些需要进一步视力检查的儿童方面，RDE比其他六种技术中的五种更有效。此外，非专业人员可以在十分钟或更短时间内学会使用RDE进行筛查，每个孩子的筛查可以在两分钟内完成，而且成本低廉。
