Of, or relating to the eye or to vision.
Of, or relating to optics or optical instruments.
A lens or other part of an optical instrument that interacts with light.
A measuring device with a small window, attached to an upside-down bottle, used to dispense alcoholic drinks in a bar.
Of or pertaining to the sensory properties of a particular food or chemical, the taste, colour, odour, and feel.
Such a property