Glaucoma causes damage to the optic nerve, which can result in an eventual loss of vision. The optic nerve is a cable of nerve fibers that carry electrical impulses from the retina to the brain.laucoma causes damage to the optic nerve, which can result in an eventual loss of vision. The optic nerve is a cable of nerve fibers that carry electrical impulses from the retina to the brain.
Leucine is a natural amino acid that is found in your body. Leucine and the branched amino acids, isoleucine and valine, make up almost one-third of your muscle protein.
Leucite Nepheline Tephrite. Leucite is a feldspathoid mineral that can be found only in igneous rocks. The luster of the mineral is vitreous to dull and its name derives from the Greek word for white, its most typical color.Leucite is relatively rare, but some of the most notable occurrences are found in Uganda, Rome, and Wyoming.eucite-tephrite is a type of igneous rock in which olivine is absent and plagioclase feldspar is present. When nepheline, the most common feldspathoid mineral in the world, also occurs in the rock, the basalt is described as a leucite nepheline tephrite.