van der Heijde G L, Meinema A J, Vlaming M S
Am J Ophthalmol. 1977 Feb;83(2):276-7. doi: 10.1016/0002-9394(77)90628-6.
Digital A-scan ultrasonography provided a digital display of intraocular distances with an overall accuracy of 0.05 mm. Since the control setting was easy and calibration was unnecessary, the time of measurement is reduced and hence the apparatus is useful in clinical practice.
数字A超超声检查法能以0.05毫米的总精度对眼内距离进行数字显示。由于控制设置简便且无需校准，测量时间得以缩短，因此该设备在临床实践中很有用。
