vis tci lujvo

t₁ is an optical tool used by v₁ to see v₂.

Cf. viska, tutci, le'otci, barkalyle'o, darvistci. Includes but is not limited to glass-based spectacles.

jbovlaste

In notes:

barkalyle'o: l₁=b₁ is a monocle/pair of (eye)glasses/spectacles allowing the clear sight of l₂ (light) by k₂ (wearer).
darvistci: t₁ is a telescope for seeing v₂=d₁ which is far from d₂.
le'otci: t₁ is a monocle/pair of (eye)glasses/spectacles for observational activity t₂.