Munich-based ocularist Gerhard Greiner is an expert at glass-blown human eye prosthetics for people who have lost an eye due to trauma, illness or accidents. Believe it or not, each glass eye takes Mr Greiner just one hour to complete, and they’re painstakingly color-matched to the patient. Continue reading for more pictures and information.

At $457 a pop, Mr Greiner creates the eye by holding a glass tube over a bunsen burner and twirls it continually while blowing through the molten glass. Then, he uses colored sticks to match the iris color. Typically, modern prosthetic eyes consist of a hollow half sphere that fits over the non-working eye if it still in place. Otherwise, it goes over a ball that has been surgically implanted into the eye socket and attached to the eye muscles. These are so realistic that many people don’t even realize patients have a fake eye.

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