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Wow! If I had a nickel for every time a Trek show had a blind engineer, I'd have two nickels. Which isn't a lot, but it's weird that it happened twice. Right?
(startrek.website)
Transcription: A side by side picture of Star Trek Strange New Worlds character Hemmer and The Next Generation character Geordi La Forge.
I mean Hemmer's species (the Aenar) are naturally blind and see through telepathy, all of them. So that really doesn't include him.
The desire to look into lasers is natural.