Pye D
Am J Optom Physiol Opt. 1979 Mar;56(3):143-52.
Motor-driven prism stereoscope vergence tests, base in break, base in recovery, base out break, and base out recovery, repeated three times (BIB, BIR, BOB, BOR X 3) were given to three separate groups. Two instruments with different speeds were used. Repeated testing shows a slight trend to convergence in slower machines. The results from both machines are still comparable. Means are similar to previously published norms from hand-turned instruments, but the variance of scores is about twice as large and there is an eso trend at near. The motor drive aids discrimination, since Ss who are capable can now follow with smooth vergences over a wider range. In general, there is no substantial trend with age between 3 and 25 years other than those which may be due to decreasing response times. Vergence scores can be adequately reduced to two independent factors, loading on convergence and divergence, respectively, which suggests that there are two processes varying independently in maturation and therapy as well as assessment.
对三个不同的组进行了电动棱镜立体视镜的聚散度测试，包括内聚性破裂、内聚性恢复、外聚性破裂和外聚性恢复，每个测试重复三次（内聚性破裂、内聚性恢复、外聚性破裂、外聚性恢复×3）。使用了两种速度不同的仪器。重复测试表明，在较慢的仪器中存在轻微的会聚趋势。两台仪器的结果仍然具有可比性。平均值与先前公布的手动转动仪器的标准相似，但分数的方差约为两倍，并且在近处存在内斜趋势。电动驱动有助于辨别，因为有能力的受试者现在可以在更宽的范围内以平滑的聚散度进行跟踪。一般来说，除了可能由于反应时间缩短而导致的趋势外，3至25岁之间没有明显的年龄趋势。聚散度分数可以充分简化为两个独立因素，分别加载在会聚和发散上，这表明在成熟、治疗和评估过程中，有两个过程是独立变化的。
