Alanko H, Jaanio E, Airaksinen P J, Nieminen H
Acta Ophthalmol (Copenh). 1980;58(1):14-9. doi: 10.1111/j.1755-3768.1980.tb04560.x.
We describe a new method, the electronic subtraction, for objective two-dimensional detection, demonstration and recording of glaucomatous optic disc changes. Siemens subtraction unit M 707 A, based on a double videochain and originally developed for the study of roentgenograms, was used. The results show that this technique is useful in demonstrating the progressive damage of neural tissue of the disc and associated alterations in the course of the vessels. Further development of the electronic subtraction method for glaucomatous optic disc evaluation is discussed.
我们描述了一种新方法——电子减法，用于客观二维检测、显示和记录青光眼性视盘变化。使用了基于双视频链、最初为研究X线照片而开发的西门子减法单元M 707 A。结果表明，该技术有助于显示视盘神经组织的渐进性损伤以及血管走行的相关改变。文中还讨论了用于青光眼性视盘评估的电子减法方法的进一步发展。
