photosensitive


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photosensitive

 [fo″to-sen´sĭ-tiv]
exhibiting photosensitivity.

pho·to·sen·si·tive

(fō'tō-sen'si-tiv),
1. An abnormally heightened reactivity of the skin to sunlight.
2. Responding to light, for example, as by a photocell.
[photo + L. sensus, a feeling, fr. sentio, to feel]

photosensitive

/pho·to·sen·si·tive/ (-sen´sĭ-tiv)
1. reacting to light; said of a cell or organism.
2. having abnormally heightened sensitivity of the skin or eyes to sunlight.

photosensitive

(fō′tō-sĕn′sĭ-tĭv)
adj.
1. Sensitive or responsive to light or other radiant energy.
2. Medicine Abnormally sensitive or reactive to light.

photosensitive

[-sen′sitiv]
Etymology: Gk, phos + L, sentire, to feel
pertaining to increased reactivity of the skin to sunlight caused by a disorder such as albinism or porphyria, or, more frequently, by the use of certain drugs. Relatively brief exposure to sunlight or to an ultraviolet lamp may cause edema, papules, urticaria, or acute burns in individuals with endogenous or acquired photosensitivity. Treatment involves avoidance of exposure to sunlight or the photosensitizing agent.

pho·to·sen·si·tive

(fō'tō-sen'si-tiv)
1. An abnormally heightened reactivity of the skin to sunlight.
2. Responding to light.
[photo + L. sensus, a feeling, fr. sentio, to feel]

photosensitive

exhibiting abnormally heightened sensitivity to sunlight.

photosensitive conjunctivitis
conjunctivitis that begins on the lateral quadrant of the cornea and reduces in severity to the center of the cornea—the area exposed to the sun's rays. If left unattended progresses to keratitis.
photosensitive dermatitis
is confined to the dorsal parts of the body exposed to the sunlight, and to parts with little or no pigment and the least hair or wool covering. The dermatitis is diffuse and often sufficiently severe to kill the animal. Initially there is itching and rubbing, then edema, followed by weeping, then necrosis or gangrene. Additional lesions may be on the undersurface of the tongue, at the mucocutaneous junction at the lips and on the lateral aspects of the teats.
Enlarge picture
Photosensitive dermatitis on the teat of a cow. By permission from Blowey RW, Weaver AD, Diseases and Disorders of Cattle, Mosby, 1997
References in periodicals archive ?
There are data showing that skin reactions to drugs appear in the form of photosensitive eruption in 8% of cases (15).
The photosensitive primer is an application-type resin solution based on organic solvents and is used to supplement the gold nanoparticle catalyst on the substrate.
This relatively long delay of epileptic phenomena after visual stimulation is rather typical for occipital photosensitive epilepsies.
Established in 2008, the full-scale operation of Development Center producing photosensitive dry films for printed wiring boards will enable Hitachi Chemical Group to supply more competitive products through the development of products for the Chinese market, customer approval, and production all handled locally.
In the printing plate making process with positive type of photosensitive layer, plate has to be exposed to the specific irradiation, due to which it becomes soluble in processing solution.
In addition, photosensitive people would need to be at least four kilometres away to significantly reduce the possibility of seizures, a distance approximately 100 times the height of an average turbine.
Professor Arnold Wilkins, who works in the University of Essex's psychology department, and his colleagues analysed the effect of "shadow flicker" on photosensitive people.
We perform our methods by activating cell-selective photophoric labels, which photosensitize and chemically reduce a photosensitive metal compound to form metal grains, particles or crystals.
SOME experts say energy-saving fluorescent bulbs can exacerbate skin rashes in people with photosensitive skin conditions.
To make the film, acrylic copolymer containing a photosensitive acid generator is solvent cast onto a supporting PET sheet, then peeled off and treated in two separate steps.
11b CF Card, Ethernet connectivity, a built-in USB port for keyboard or mouse, built-in speakers/ microphone, an MP3 and WAV audio file player, a headphone connection, a photosensitive light detector to regulate display brightness, 64 MB of memory, and 64 MB of compact flash.
Andreas Lendlein at GKSS Research Center in Teltow, Germany, and his colleagues bestowed this shape-memory property on a polymer blend by adding photosensitive molecules.