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Synonyms for Vision (same or very similar meaning)

WordNet sense 1 (the perceptual experience of seeing):
visual sensation

WordNet sense 2 (the ability to see; the visual faculty):
sight, visual modality, visual sense

WordNet sense 3 (the formation of a mental image of something that is not perceived as real and is not present to the senses):
imagination, imaginativeness

From the ODE community, based on WordNetadd/edit