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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 .
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.
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]
Prism adaptation. Prism adaptation is a sensory-motor adaptation that occurs after the visual field has been artificially shifted laterally or vertically. It was first introduced by Hermann von Helmholtz in late 19th-century Germany as supportive evidence for his perceptual learning theory (Helmholtz, 1909/1962). [1]
Psychology Today is an American media organization with a focus on psychology and human behavior. It began as a bimonthly magazine, which first appeared in 1967. The Psychology Today website features therapy and health professionals directories and hundreds of blogs written by a wide variety of psychologists, psychiatrists, social workers, medical doctors, marriage and family therapists ...
Rosy retrospection. Rosy retrospection is a proposed psychological phenomenon of recalling the past more positively than it was actually experienced. The highly unreliable nature of human memory is well-documented and accepted amongst psychologists. Some research suggests that negative emotions are exaggerated in memory as well as positive ones.
Origin and usage. The Oxford English Dictionary defines conspiracy theory as "the theory that an event or phenomenon occurs as a result of a conspiracy between interested parties; spec. a belief that some covert but influential agency (typically political in motivation and oppressive in intent) is responsible for an unexplained event".
Psychological resistance, also known as psychological resistance to change, is the phenomenon often encountered in clinical practice in which patients either directly or indirectly exhibit paradoxical opposing behaviors in presumably a clinically initiated push and pull of a change process. In other words, the concept of psychological ...