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Light from a single point of a distant object and light from a single point of a near object being brought to a focus. The accommodation reflex (or accommodation-convergence reflex) is a reflex action of the eye, in response to focusing on a near object, then looking at a distant object (and vice versa), comprising coordinated changes in vergence, lens shape (accommodation) and pupil size.
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 .
Vision therapy is based on the proposition that many learning disabilities in children are based on vision problems, and that these can be cured by performing eye exercises. Vision therapy lacks sound evidence, has been characterized as a pseudoscience and its practice as quackery. [6] [1] Vision therapy is a broad concept that encompasses a ...
Eye movement desensitization and reprocessing. Eye movement desensitization and reprocessing ( EMDR) is a form of psychotherapy that is a recommended treatment for post-traumatic stress disorder, but remains controversial within the psychological community. [ 1][ 2] It was devised by Francine Shapiro in 1987 and originally designed to alleviate ...
Electroencephalography. Electroencephalography ( EEG) [ 1] is a method to record an electrogram of the spontaneous electrical activity of the brain. The biosignals detected by EEG have been shown to represent the postsynaptic potentials of pyramidal neurons in the neocortex and allocortex. [ 2]
The Diagnostic and Statistical Manual of Mental Disorders ( DSM; latest edition: DSM-5-TR, published in March 2022 [ 1]) is a publication by the American Psychiatric Association (APA) for the classification of mental disorders using a common language and standard criteria. It is the main book for the diagnosis and treatment of mental disorders ...
Vergence-accommodation conflict ( VAC ), also known as accommodation-vergence conflict, is a visual phenomenon that occurs when the brain receives mismatching cues between vergence and accommodation of the eye. This commonly occurs in virtual reality devices, augmented reality devices, 3D movies, and other types of stereoscopic displays and ...
The television host explained to fellow MS survivors at My MS Second Act how confirmation of his disease came four decades after he first started showing symptoms as a student. "When I graduated ...