👉 Pseudoobscura is a term that refers to a type of visual illusion or phenomenon in which an object appears smaller than it actually is due to the viewer's perception. This illusion is often associated with the "eye-ghost" effect, where a person looks at a small object and perceives it as being larger than it really is. The term comes from the idea that the eye can perceive objects even when they appear to be smaller or smaller than they actually are due to the effects of light