"Entopic" is an
adjectivewith at least two meanings. First, it can mean "in the usual place" to refer to medicalor anatomicalobjects. [cite dictionary
title = Hutchinson Dictionary of Difficult Words
ISBN = 0-09177-079-3
url = http://www.tiscali.co.uk/reference/dictionaries/difficultwords/data/d0005151.html] It is the opposite of "ectopic", which means "not in the usual place" (such as an
Second, it can mean entoptic, that is "visible because of something within the
eye" or "visible without an external stimulus". This meaning arises from a typographical error. [cite journal
last = Manor
first = R. S.
title = Erratum: Entoptic [corrected] phenomena in pregeniculate and postgeniculate hemianopsia with splitting of macula by perimetry
journal = American Journal of Ophthalmology
volume = 109
pages = 375
date = 1990
accessdate = ]
Both meanings, however, can be supported etymologically: the words "entopic" and "entoptic" both have Greek roots; "en" means "in"; "topos" means "place", "ento" or "ent-" means "within" and "optic" refers to "sight" or "eye".
Entopic graphomaniais a surrealistmethod in which dots are made at the sites of impurities in a blank sheet of paper, and lines are then made between the dots.
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