Tarczy-Hornoch Kristina, Lin Jesse, Deneen Jennifer, Cotter Susan A, Azen Stanley P, Borchert Mark S, Wang Ying, Varma Rohit
Doheny Eye Institute, and the Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
Optom Vis Sci. 2008 Mar;85(3):158-63. doi: 10.1097/OPX.0b013e3181643ea7.
To determine testability using the Randot Pre-school Stereoacuity Test in black and Hispanic children 30 to 72 months of age.
A population-based cohort of children 30 to 72 months of age was administered the Randot Pre-school Stereoacuity Test, with presenting refractive correction, and before cover testing, visual acuity testing, or refraction. Children who could not point to specified two-dimensional demonstration pictures, and children who would not try to name or match random dot figures to the corresponding two-dimensional pictures, were classified as unable to perform the test. Children who were able to perform the task but could not correctly identify at least two 800-arcsecond random dot figures were classified as having no stereopsis, and were retested by another examiner.
Stereoacuity testing was attempted in 1662 Hispanic and 1470 black children. Overall, 80% of children were able to be tested; 33% of children 30 to 36 months of age, 73% of children 37 to 48 months of age, 96% of children 49 to 60 months of age, and 98% of children 61 to 72 months of age were testable. Older children were significantly more likely to complete testing successfully than younger children (p < 0.0001). After adjusting for age, there was no significant ethnicity-related difference in testability (p = 0.19); however, there was a small but significant gender-related difference (p = 0.0002) with more girls (82%) than boys (77%) able to complete testing.
Eighty percent of children aged 30 to 72 months can be tested using the Randot Pre-school Stereoacuity test. Testability increases steadily with age, and 97% of children over 48 months of age can complete the test. Testability does not differ between children of Hispanic and black ethnicity.
使用兰多学前立体视锐度测试来确定30至72个月大的黑人及西班牙裔儿童的可测试性。
对30至72个月大的儿童进行基于人群的队列研究，在进行屈光矫正、遮盖试验、视力测试或验光之前，先进行兰多学前立体视锐度测试。无法指向特定二维示范图片的儿童，以及不愿尝试说出随机点图形名称或将其与相应二维图片匹配的儿童，被归类为无法进行测试。能够完成任务但不能正确识别至少两个800角秒随机点图形的儿童被归类为无立体视，并由另一名检查者重新测试。
对1662名西班牙裔儿童和1470名黑人儿童进行了立体视锐度测试。总体而言，80%的儿童能够接受测试；30至36个月大的儿童中有33%、37至48个月大的儿童中有73%、49至60个月大的儿童中有96%、61至72个月大的儿童中有98%可以接受测试。年龄较大的儿童比年龄较小的儿童成功完成测试的可能性显著更高（p<0.0001）。在调整年龄后，可测试性方面没有显著的种族相关差异（p = 0.19）；然而，存在一个小但显著的性别相关差异（p = 0.0002），能够完成测试的女孩（82%）比男孩（77%）更多。
使用兰多学前立体视锐度测试，可以对80%的30至72个月大的儿童进行测试。可测试性随年龄稳步增加，48个月以上的儿童中有97%可以完成测试。西班牙裔和黑人儿童在可测试性方面没有差异。
