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If an optic fiber is broken, it can cause harm as it is very small, transparent, and sharp, making it difficult to see. It can easily penetrate the skin and if these small parts enter the eye, they are difficult to remove. If swallowed, it can lead to internal bleeding and death. Optic fibers are thin wires made of glass or polymers, consisting of two cylindrical fibers of varying clarity and aligned in the axis, forming a thin strand with two layers.