So. How do they work?
Kinsight goggles are in fact two separate crystal monocles, linked together with a simple silver clasp that allows them to both be worn at once like pince-nez spectacles. The left and right halves may be separated and worn individually, allowing two people to see through one another’s eyes.
When separated, the wearer of either half of the goggles may speak a command word to see through the lens of the other half, so long as the halves of the goggles remain within 500 feet of one another. When the two lenses are attached and worn as one item, they offer no magical benefit—just some minor magnification.
If I have darkvision, and my pal does not, what happens when I activate this item?
A) I see "through the lens", using my own senses.
B) I see "through another's eyes", losing my darkvision.
Strictly RAW, probably A. From a logic perspective, also A.
The beginning feels a bit like the fluff of the magic item, with the second half going into how it works mechanically. That said, it functions both ways, if one person had Darkvision and the other did not, the one without does not gain the benefits of Darkvision while looking through the other's lens.
"Do you see what I see?" "No, unlike you I can't see in the dark..."
From logic, just how light works, and how I picture this working. With the command word, the lens shifts to instead of showing what's in front of it, showing what's in front of the other, and it's up to your eye to percieve it. It's not giving you your partner's eye, or psychicly implanting the image of what they see in your head.
Edit: Concerning the spell, Share Senses targets a familiar. I picture the lens being the target of the spell, not the other person since there isn't really any attunement time or anything like that for the lenses.
Thanks for the input.
If the goggles functioned as the spell, I'd definitely say B as it makes you rely on your familiar's senses.
But since there's no such language in the description, option A seems more likely.