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In the movie, "Young Frankenstein", one of the stars actually suffered from a thyroid condition known as Graves' disease. This provides a perfect opportunity for someone to say, "Damn your eyes." Who says it?
Answer: Frederick Frankenstein
Dr. Frankenstein, Igor, and Inga are exploring the castle. They enter a dark room. After Igor notices two lightswitches, Dr. Frankenstein flips one of them causing a shower of sparks. The Doctor then damns Igor's eyes, to which Igor replies, "Too late."