blind spot

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spot

 [spot]
a circumscribed area or place, usually distinguished by its color; see also macula and tache.
actual focal spot the section of a focal spot on which there is intersection of an electron beam with an anode of an x-ray tube.
Bitot's s's foamy gray triangular spots of keratinized epithelium on the conjunctivae, a sign of vitamin A deficiency.
blind spot
café au lait spot a light brown pigmented macule seen in neurofibromatosis and albright's syndrome.
cherry-red spot the choroid appearing as a red circular area surrounded by gray-white retina, as viewed throught the fovea centralis in tay-sachs disease. Called also Tay's spot.
cotton-wool spot white or gray soft-edged opacities in the retina composed of cytoid bodies; seen in hypertensive retinopathy, lupus erythematosus, and numerous other conditions.
effective focal spot the size of a projected focal spot in a specified direction measured with a quality assurance test tool such as the slit camera.
focal spot
1. the object of a patient's gaze during distraction techniques.
2. a small area of an x-ray target that receives the main electron stream.
Forschheimer s's a fleeting skin eruption consisting of discrete rose spots on the soft palate sometimes seen in rubella just prior to the onset of the skin rash.
Koplik's s's small, irregular, bright red spots on the buccal and lingual mucosa, with a minute bluish white speck in the center of each; they are pathognomonic of beginning measles.
liver spot
1. a lay term for senile lentigo.
2. (in pl.) tinea versicolor.
mental blind spot mental scotoma.
mongolian spot a type of congenital brown to gray-blue nevus; see also mongolian spot.
Roth's s's round or oval white spots consisting of coagulated fibrin seen in the retina in a number of diseases in which a vascular insult resulting in hemorrhage is followed by healing.
Tay's spot cherry-red spot.

phys·i·o·log·ic sco·to·ma

the negative scotoma in the visual field, corresponding to the optic disc.
Synonym(s): blind spot (1)

blind spot

n.
Anatomy The small, circular, optically insensitive region in the retina where fibers of the optic nerve emerge from the eyeball. It has no rods or cones. Also called optic disk.
Ophthalmology
(1) A small circumscribed area of the retina where the optic nerve enters the eye; occurs normally in all eyes
(2) Any gap in the visual field corresponding to an area of the retina where no visual cells are present; associated with eye disease; optic disk
Psychiatry An area of a person’s personality of which he is totally unaware, since recognition would cause painful emotions
Public health A physical space behind a driver’s outer shoulder between that seen by the rear-view mirrors mounted on the inside and outside of a car

blind spot

Ophthalmology
1. A small area of the retina where the optic nerve enters the eye; occurs normally in all eyes.
2. Any gap in the visual field corresponding to an area of the retina where no visual cells are present; associated with eye disease; optic disk, see there Psychiatry An area of a person's personality of which he is totally unaware, since recognition would cause painful emotions Public health A physical space behind a driver's outer shoulder between that seen by the rear-view mirrors mounted on the inside and outside of a car.

men·tal sco·to·ma

(men'tăl skŏ-tō'mă)
Absence of insight into, or inability to comprehend, items relative to a subject with content that is highly emotional to the person.
Synonym(s): blind spot (2) .

op·tic disc

(op'tik disk) [TA]
An oval area of the ocular fundus devoid of light receptors where the axons of the retinal ganglion cells converge to form the optic nerve head.
Synonym(s): discus nervi optici [TA] , blind spot (3) , optic papilla.

phys·i·o·log·ic sco·to·ma

(fiz'ē-ŏ-loj'ik skō-tō'mă)
The negative scotoma in the visual field, corresponding to the optic disc.
Synonym(s): blind spot (1) .

blind spot

The projection into space of the optic nerve head (optic disc) on the RETINA. This consists solely of nerve fibres and has no receptor elements (rods or cones). The blind spot lies about 15 to the outer side of whatever point we are looking at because the optic disc lies about 15 to the inner side of the macula.

blind spot

the point at which the optic nerve leaves the retina of the eye and from which light-sensitive nerve cells (rods and cones) are absent.
References in periodicals archive ?
People with this blind spot are quick to judge, even though they are modeling negative behavior.
I will be pushing for a European Parliament report on blind spots and will also work with colleagues in Westminster."
Dilks' team later identified where the blind spot was for each volunteer's other eye, and then presented an image of a square right next to it.
"Blind spots are areas of unawareness about our attitudes, thinking, and behaviors that contribute to poor decision making," says Utsey.
announced today, as an industry first, the development of a new image-sensing technology(1) that can thoroughly and accurately track - without blind spots - the motion paths of multiple individuals as they move while indoor.
BLIND SPOTS: WHY SMART PEOPLE DO DUMB THINGS packs in examples, tactics and tips on how to understand the underlying meaning of simple blunders.
Jacques Barrot thus pledged to "examine the issue" of mirrors removing blind spots at the front of lorries (front view mirrors).
"Sometimes my lack of seeing is due to my failure to know myself as I truly am or because my blind spots hide a part of myself from me....
SOME popular family 4x4 off-road vehicles often used on the school run have "dangerous" blind spots, it was revealed today.
Tokyo, Japan, Sept 21, 2006 - (JCN) - Japan's National Institute of Advanced Industrial Science and Technology (AIST), in collaboration with the National Rehabilitation Center for Persons with Disabilities, has developed an electronic wheelchair with a 360-degree camera that leaves no blind spots.
It is to the credit of science that scientism itself is being shown its own shortcomings and blind spots. Perhaps the primary factor is parapsychology, formerly known as psychic research.
The starfield covers 180 degrees on the dome without any cutouts or blind spots along the horizon.