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Infrared contact lenses let you see in the dark
(arstechnica.com)
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this post was submitted on 22 May 2025
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Without even visiting the article I can say with full confidence these contact lenses will not be opaque.
EDIT: We really don't have to go beyond the conceptual stage.
Yes, this includes ultraviolet light. If a contact lens is opaque, it blocks all light from passing through the eye's lens and cornea. It will never reach the retina to even be recognized as on or off! No opaque contact lens will ever be used. Please tell me if I'm wrong...
Why? Does it also include x-rays? That’s only one step further on the electromagnetic spectrum. Seems arbitrary to stop at ultraviolet waves! Does that mean thin sheets of steel aren’t opaque? Or is the term “opaque”, without any modifiers attached, colloquially used to describe whether something permits visible light through?
For the record, they’re not opaque. The original article actually says they work better if you close your eyes.
Or with cosmic rays, not sure anything would be opaque.