
Lens
Optics Context
Remember 'lens' refers to physical objects that affect light in science or photography.

The lens on his glasses helps him see clearly.
Neutral Term
'Lens' is value-neutral, meaning it doesn't have a positive or negative connotation.

I need a new lens for my camera before the trip.
Interchangeability
A 'lens' can usually be changed or adjusted, especially in cameras or glasses.

Could you swap the telephoto lens for a wide-angle one?
Compare with
EyepieceFocusGlassMagnifierOpticPrismRefractorSpectacle
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