W. L. Alden, Professor's Van Wagener's Eye (1895)
“ He now saw his way to make that eye useful, and to give himself the most convenient light that a man ever had. His idea was to make a glass eye with an incandescent fibre in the middle of it, and to run it by a storage battery in his waistcoat pocket. So he went to work, and, being a very ingenious workman, as well as a man brimful of science, he turned out a glass eye that couldn't be distinguished from a natural one, so far as appearances went, and that had an electric light of six candle-power in the middle of it. ”
