Traumatic optic neuropathy (TON) refers to an acute injury of the optic nerve secondary to trauma. The optic nerve axons may be damaged either directly or indirectly and the visual loss may be partial or complete.
In Minecraft, emerald ore is very hard to find and is found in small deposits in the Extreme Hills biome. You can usually find emerald ore between 13 and 31 blocks below the ground and close to lava. So if you see a pool of lava in the Extreme Hills biome, that is a great place to start mining downward.
Mining for emeralds is delicate work. These gemstones are often hidden in other, less valuable, rocks. The best emeralds are usually found close to the earth's surface,... Mining for emeralds is delicate work. These gemstones are often hidden in other, less valuable, rocks. The best emeralds are usually found close to the earth's surface, making initial exploration a dainty task. Exploration is best done by hand, since machinery could destroy or blast away the stones.