People with glaucoma can lose nerve tissue, resulting in vision loss. The optic nerve is a bundle of about 1 million individual nerve fibers that transmits the visual signals from the eye to the brain. In the most common form of glaucoma, primary open-angle glaucoma, the fluid pressure inside the eye increases. This increase in pressure may cause progressive damage to the optic nerve and loss of nerve fibers. Vision loss may result. Advanced glaucoma may even cause blindness.
The Yellowstone caldera is located over a âhotspotâ, where volcanism â and in the case of Yellowstone, hydrothermal activity â is occurring far away from the plate boundaries where such things are normally found.he Yellowstone caldera is located over a âhotspotâ, where volcanism â and in the case of Yellowstone, hydrothermal activity â is occurring far away from the plate boundaries where such things are normally found.
As the Pacific plate slowly moves over the hotspot, the islands in the Hawaiian-Emperor chain have been built one at a time by a numerous volcanic eruptions. Another hotspot is responsible for the past super-eruptions at Yellowstone National Park in the United States.otspots. In geology, the places known as hotspots or hot spots are volcanic regions thought to be fed by underlying mantle that is anomalously hot compared with the surrounding mantle. They may be on, near to, or far from tectonic plate boundaries.