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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 ...
fear of youth; inaccurate, exaggerated and sensational characterization of young people Equinophobia: fear of horses: Ergophobia, ergasiophobia fear of work or functioning, or a surgeon's fear of operating Erotophobia: fear of sexual love or sexual abuse: Erythrophobia, erytophobia, ereuthophobia fear of the color red, or fear of blushing ...
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 ...
A phobia is an anxiety disorder, defined by an irrational, unrealistic, persistent and excessive fear of an object or situation. [7] [8] [9] [1] Phobias typically result in a rapid onset of fear and are usually present for more than six months. [1]
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.
A safety pin. Aichmophobia (/ ˌ eɪ k m ə ˈ f oʊ b i ə /) is a kind of specific phobia, the morbid fear of sharp things, [1] such as triangles, stars, squares, pencils, needles, knives, darts, prickly plants (like thistles and similar weeds), cactus trees, pine needles, broken glass, broken porcelain, sharp pieces of wood, a pointing finger, hexagons, or even the sharp end of an umbrella ...
An example of this phenomenon is when clean air scatters blue light more than red light, and so the midday sky appears blue (apart from the area around the Sun which appears white because the light is not scattered as much). The optical window is also referred to as the "visible window" because it overlaps the human visible response spectrum.
Monochromacy (from Greek mono, meaning "one" and chromo, meaning "color") is the ability of organisms to perceive only light intensity without respect to spectral composition. Organisms with monochromacy lack color vision and can only see in shades of grey ranging from black to white. Organisms with monochromacy are called monochromats.