Definition
Optically relates to vision or the science of light and sight. It describes how something appears to the eye or how it interacts with light. In the context of lenses, it relates to how they focus and bend light to create an image. Unlike 'aurally' which relates to hearing, optically emphasizes visual perception. It's about what we see rather than what we hear or feel. A magician's illusion relies on optically fooling the audience. Something may be optically clear because it lets light pass through unhindered.