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.
Diamond Ore is a ore for a rare gem, which is one of the most valuable resources for tools and armor found in Minecraft. Immediately after mining the block, the player acquires a diamond, rather than the ore itself. Diamond can be used to make very strong tools and durable armor.