Leitgeb N, Schuy S, Zirm M
Albrecht Von Graefes Arch Klin Exp Ophthalmol. 1979 Feb 8;209(4):263-8. doi: 10.1007/BF00419061.
The liquification of the corpus vitreum by ultrasound is a promising new alternative to presently used mechanical methods of vitrectomy. With regard to the duration time of insonation, as well as to the ultrasonic intensity, there exist thresholds, the exceeding of which causes a discontinuous breakdown of the vitreous frame in a spherical zone around the transducer tip which can be verified by ultrasonic pulse echo methods. Viscosity measurements showed that the vitreous isonified in this area has almost the same viscosity as water whereas its optical transparency remains unchanged. The dependence of the diameter of the liquified zone on insonation time was measured.
超声使玻璃体液化是一种很有前景的新型替代方法，可取代目前使用的机械性玻璃体切割术。关于超声照射时间以及超声强度，存在阈值，超过该阈值会导致换能器尖端周围球形区域内的玻璃体框架发生不连续破裂，这可通过超声脉冲回波方法得到证实。粘度测量表明，在该区域接受超声照射的玻璃体其粘度几乎与水相同，而其光学透明度保持不变。测量了液化区直径与超声照射时间的关系。
