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Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]
Esophoria is an eye condition involving inward deviation of the eye, usually due to extra-ocular muscle imbalance. It is a type of heterophoria. Cause. Causes include: Refractive errors; Divergence insufficiency; Convergence excess; this can be due to nerve, muscle, congenital or mechanical anomalies.
Convergence insufficiency. Convergence Insufficiency. Other names. Convergence disorder. Specialty. Ophthalmology, optometry. Convergence insufficiency is a sensory and neuromuscular anomaly of the binocular vision system, characterized by a reduced ability of the eyes to turn towards each other, or sustain convergence .
Specialty. Neurology, ophthalmology. Diplopia is the simultaneous perception of two images of a single object that may be displaced horizontally or vertically in relation to each other. [1] Also called double vision, it is a loss of visual focus under regular conditions, and is often voluntary.
Jungian archetypes are a concept from psychology that refers to a universal, inherited idea, pattern of thought, or image that is present in the collective unconscious of all human beings. The psychic counterpart of instinct, archetypes are thought to be the basis of many of the common themes and symbols that appear in stories, myths, and ...
Symbolic self-completion theory. The theory of symbolic self-completion is a psychological theory which holds that individuals seek to acquire and display symbols that are strongly related to what they perceive as the ideal self. [1] For example, relatively effeminate boys who want to appear macho may use products associated with manliness ...
Psi-theory. Psi-theory, developed by Dietrich Dörner at the University of Bamberg, is a systemic psychological theory covering human action regulation, intention selection and emotion. [1] [2] It models the human mind as an information processing agent, controlled by a set of basic physiological, social and cognitive drives.
Meaning in psychology. In psychology, apperception is "the process by which new experience is assimilated to and transformed by the residuum of past experience of an individual to form a new whole". [2] In short, it is to perceive new experience in relation to past experience. The term is found in the early psychologies of Herbert Spencer ...