Myringotomy children, while local anesthesia suffices for adults. The ear is washed and a small incision made in the eardrum. Any fluid that is present is then aspirated, the tube of choice inserted, and the ear packed with cotton to control any slight bleeding that might occur. This is known as conventional (or "cold knife") myringotomy and usually heals in one to two days. A new variation (called "tympanolaserostomy" or "laser-assisted tympanostomy") uses CO laser, and is performed with a computer-driven laser and a video monitor to pinpoint a precise location for the hole. The laser takes one tenth of a
River incision River incision River incision is the narrow erosion caused by a river or stream that is far from its base level. River incision is common after tectonic uplift of the landscape. Incision by multiple rivers result in a dissected landscape, for example a dissected plateau. River Incision is the natural process by which a river cuts downward into its bed, deepening the active channel. Though it is a natural process, it can be accelerated rapidly by human factors including land use changes such as timber harvest, mining, agriculture, and road and dam construction. The rate of incision is a function