Search results
Results from the WOW.Com Content Network
Photophobia is a medical symptom of abnormal intolerance to visual perception of light. [1] As a medical symptom, photophobia is not a morbid fear or phobia, but an experience of discomfort or pain to the eyes due to light exposure or by presence of actual physical sensitivity of the eyes, [2] though the term is sometimes additionally applied to abnormal or irrational fear of light, such as ...
Forms of heliophobia based on such fears can cause the sufferer to eventually develop fear of being in public or fear of people in general by association, as a crippling fear of bright light can significantly limit the places a heliophobe can comfortably visit, as well as prevent that person from going outside during the daytime, when most ...
The English suffixes -phobia, -phobic, -phobe (from Greek φόβος phobos, "fear") occur in technical usage in psychiatry to construct words that describe irrational, abnormal, unwarranted, persistent, or disabling fear as a mental disorder (e.g. agoraphobia), in chemistry to describe chemical aversions (e.g. hydrophobic), in biology to describe organisms that dislike certain conditions (e.g ...
Chromophobia (also known as chromatophobia [1] or chrematophobia [2]) is a persistent, irrational fear of, or aversion to, colors and is usually a conditioned response. [2] While actual clinical phobias to color are rare, colors can elicit hormonal responses and psychological reactions.
Hemeralopia is known to occur in several ocular conditions. Cone dystrophy and achromatopsia , affecting the cones in the retina, and the anti-epileptic drug trimethadione are typical causes. Adie's pupil , which fails to constrict in response to light; aniridia , which is absence of the iris; and albinism , where the iris is defectively ...
Specific phobia is an anxiety disorder, characterized by an extreme, unreasonable, and irrational fear associated with a specific object, situation, or concept which poses little or no actual danger. [ 1 ] [ 2 ] Specific phobia can lead to avoidance of the object or situation, persistence of the fear, and significant distress or problems ...
A study finds that even a small amount of nighttime light during sleep can compromise heart health and increase insulin resistance. How light during nighttime can seriously harm your health [Video ...
The color that is seen by our eyes is that of the light not absorbed by the reflecting object within a certain wavelength spectrum of visible light. The chromophore indicates a region in the molecule where the energy difference between two separate molecular orbitals falls within the range of the visible spectrum (or in informal contexts, the ...