# Glowing (eye) pupils in black light

**URL:** <https://boards.straightdope.com/t/glowing-eye-pupils-in-black-light/286899>\
**Category:** Factual Questions\
**Created:** [January 27, 2005, 10:31am UTC](https://boards.straightdope.com/t/glowing-eye-pupils-in-black-light/286899 "2005-01-27T10:31:36Z")\
**Posts on this page:** 6\
**Page:** 4

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**Author:** ![Chronos](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chronos/32/134_2.png) [@Chronos](https://boards.straightdope.com/u/Chronos)\
**Post date:** [August 8, 2025, 12:03am UTC](https://boards.straightdope.com/t/glowing-eye-pupils-in-black-light/286899/63 "2025-08-08T00:03:47Z")

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Optics doesn’t work that way. If there were a screen implanted into your eye, you wouldn’t be able to see anything on it.

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**Author:** ![beowulff](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/beowulff/32/542_2.png) [@beowulff](https://boards.straightdope.com/u/beowulff)\
**Post date:** [August 8, 2025, 12:07am UTC](https://boards.straightdope.com/t/glowing-eye-pupils-in-black-light/286899/64 "2025-08-08T00:07:45Z")

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Yeah, I hate when I have to do the firmware updates on mine!

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**Author:** ![markn\_1](https://avatars.discourse-cdn.com/v4/letter/m/f9ae1b/32.png) [@markn\_1](https://boards.straightdope.com/u/markn_1)\
**Post date:** [August 8, 2025, 12:15am UTC](https://boards.straightdope.com/t/glowing-eye-pupils-in-black-light/286899/65 "2025-08-08T00:15:13Z")

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Also your ophthalmologist would notice this magical display screen cum camera as soon as they looked in your eye.

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**Author:** ![Darren\_Garrison](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/darren_garrison/32/92_2.png) [@Darren\_Garrison](https://boards.straightdope.com/u/Darren_Garrison)\
**Post date:** [August 8, 2025, 12:17am UTC](https://boards.straightdope.com/t/glowing-eye-pupils-in-black-light/286899/66 "2025-08-08T00:17:57Z")

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There would probably be a big market for an injectable cum camera.

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**Author:** ![Procrustus](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/procrustus/32/2994_2.png) [@Procrustus](https://boards.straightdope.com/u/Procrustus)\
**Post date:** [August 8, 2025, 12:18am UTC](https://boards.straightdope.com/t/glowing-eye-pupils-in-black-light/286899/67 "2025-08-08T00:18:03Z")

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> [@markn\_1](#):
>
> Also your ophthalmologist would notice this magical display screen cum camera as soon as they looked in your eye

Oh, they see it. But they’re part of the plan and keep quiet.

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**Author:** ![Mr.E](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mr.e/32/8932_2.png) [@Mr.E](https://boards.straightdope.com/u/Mr.E)\
**Post date:** [August 5, 2026, 4:12am UTC](https://boards.straightdope.com/t/glowing-eye-pupils-in-black-light/286899/68 "2026-08-05T04:12:58Z")

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My current UV-resistant glasses broke and I had to put my old non-UV glasses on. When I walked past the bug zapper the lenses on my glasses started glowing. I took off the lenses to look at them and noticed my vision was still green-tinted even without them. Sure enough, my eye lenses were glowing as much as my glasses lenses. I grabbed my broken glasses and put them over my eyes and they don’t glow and keep my eyes from glowing too.

Unlike a lot of the other anecdotes in this 20 year old thread, my glowing eyes affected my vision. Guess it’s a good thing my glasses broke, I should schedule an eye exam.

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