| ALTE | Apparent Life-Threatening Event; »ý¸í À§Çù »ç°Ç = Near Miss ; È£Èí Á¤Áö¿Í ºó¸Æ, û»ö... |
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| LND | Light-Near Dissociation |
| D&N | distance and near [vision] |
| juxt | near [Lat. juxta] |
| NDE | near-death experience; nondiabetic extremity |
| near-IR | Near-infrared |
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| IR | 1.Near-infrared |
| NIR | Near Infra-Red |
| NIRS | Near Infra-red Spectroscopy |
| NIRS | Near Infrared Reflectance Spectroscopy |
| near sight | <ophthalmology> That error of refraction in which rays of light entering the eye parallel to the optic axis are brought to a focus in front of the retina, as a result of the eyeball being too long from front to back (axial myopia) or of an increased strength in refractive power of the media of the eye (index myopia). Also called nearsightedness, because the near point is less distant than it is in emmetropia with an equal amplitude of accommodation. Origin: Gr. Myein = to shut (18 Nov 1997) |
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| second sight | 1. <ophthalmology> Improved near vision in the aged as a result of increased refractivity of the nucleus of the lens causing myopia. Synonym: senile lenticular myopia. 2. The power of discerning what is not visible to the physical eye, or of foreseeing future events. Such as are of a disastrous kind, the capacity of a seer or prophetic vision. Source: Websters Dictionary (01 Mar 1998) |
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| short sight | <ophthalmology> That error of refraction in which rays of light entering the eye parallel to the optic axis are brought to a focus in front of the retina, as a result of the eyeball being too long from front to back (axial myopia) or of an increased strength in refractive power of the media of the eye (index myopia). Also called nearsightedness, because the near point is less distant than it is in emmetropia with an equal amplitude of accommodation. Origin: Gr. Myein = to shut (18 Nov 1997) |
| sight | 1. The act of seeing; perception of objects by the eye; view; as, to gain sight of land. "A cloud received him out of their sight." (Acts. I. 9) 2. The power of seeing; the faculty of vision, or of perceiving objects by the instrumentality of the eyes. "Thy sight is young, And thou shalt read when mine begin to dazzle." (Shak) "O loss of sight, of thee I most complain!" (Milton) 3. The state of admitting unobstructed vision; visibility; open view; region which the eye at one time surveys; space through which the power of vision extends; as, an object within sight. 4. A spectacle; a view; a show; something worth seeing. "Moses said, I will now turn aside and see this great sight, why the bush is not burnt." (Ex. Iii. 3) "They never saw a sight so fair." (Spenser) 5. The instrument of seeing; the eye. "Why cloud they not their sights?" (Shak) 6. Inspection; examination; as, a letter intended for the sight of only one person. 7. Mental view; opinion; judgment; as, in their sight it was harmless. "That which is highly esteemed among men is abomination in the sight of God." (Luke xvi. 15) 8. A small aperture through which objects are to be seen, and by which their direction is settled or ascertained; as, the sight of a quadrant. "Thier eyes of fire sparking through sights of steel." (Shak) 9. A small piece of metal, fixed or movable, on the breech, muzzle, center, or trunnion of a gun, or on the breech and the muzzle of a rifle, pistol, etc, by means of which the eye is guided in aiming. 10. In a drawing, picture, etc, that part of the surface, as of paper or canvas, which is within the frame or the border or margin. In a frame or the like, the open space, the opening. 11. A great number, quantity, or sum; as, a sight of money. Sight in this last sense was formerly employed in the best usage. "A sight of lawyers." "A wonder sight of flowers." (Gower) at sight, as soon as seen, or presented to sight; as, a draft payable at sight: to read Greek at sight; to shoot a person at sight. Front sight A front sight through which the objects aimed at may be seen, in distinction from one that hides the object. A rear sight having an open notch instead of an aperture. Peep sight, Rear sight. See Peep, and Rear. Sight draft, an order, or bill of exchange, directing the payment of money at sight. To take sight, to take aim; to look for the purpose of directing a piece of artillery, or the like. Synonym: Vision, view, show, spectacle, representation, exhibition. Origin: OE. Sight, sit, siht, AS. Siht, gesiht, gesih, gesieh, gesyh; akin to D. Gezicht, G. Sicht, gesicht, Dan. Sigte, Sw. Sigt, from the root of E. See. See See. Source: Websters Dictionary (01 Mar 1998) |
| sight blindness | A form of aphasia in which the significance of signs and symbols is not appreciated. Synonym: sight blindness. Synonym: asemasia, asaemia. Origin: G. A-priv. + symbolon, an outward sign (05 Mar 2000) |
| night sight | <ophthalmology> Day blindness, defective vision in a bright light. Origin: Gr. Hemera = day, alaos = blind (18 Nov 1997) |
| day sight | Night blindness or difficulty in seeing at night. Symptom of vitamin A deficiency. (27 Sep 1997) |
| far sight | Farsightedness or hyperopia occurs when a refractive error in which light rays entering the eye are focused behind the retina. This condition is easily corrected with corrective lenses or contact lenses. (27 Sep 1997) |
| long sight | Farsightedness or hyperopia occurs when a refractive error in which light rays entering the eye are focused behind the retina. This condition is easily corrected with corrective lenses or contact lenses. (27 Sep 1997) |
| pupillary light-near dissociation | A stronger near pupil response than light response; due to weak pupillomotor input, Argyll Robertson pupil, dorsal midbrain syndrome, or to misdirection of ciliary muscle fibres into the iris sphincter. Synonym: light-near dissociation. (05 Mar 2000) |
| spectroscopy, near-infrared | A noninvasive technique that uses the differential absorption properties of haemoglobin and myoglobin to evaluate tissue oxygenation and indirectly can measure regional haemodynamics and blood flow. Near-infrared light (nir) can propagate through tissues and at particular wavelengths is differentially absorbed by oxgenated vs. Deoxygenated forms of haemoglobin and myoglobin. Illumination of intact tissue with nir allows qualitative assessment of changes in the tissue concentration of these molecules. The analysis is also used to determine body composition. (12 Dec 1998) |
| near | 1. Not far distant in time, place, or degree; not remote; close at hand; adjacent; neighboring; nigh. "As one near death." "He served great Hector, and was ever near, Not with his trumpet only, but his spear." (Dryden) 2. Closely connected or related. "She is thy father's near kinswoman." (Lev. Xviii. 12) 3. Close to one's interests, affection, etc.; touching, or affecting intimately; intimate; dear; as, a near friend. 4. Close to anything followed or imitated; not free, loose, or rambling; as, a version near to the original. 5. So as barely to avoid or pass injury or loss; close; narrow; as, a near escape. 6. Next to the driver, when he is on foot; in the Unted States, on the left of an animal or a team; as, the near ox; the near leg. See Off side, under Off, . 7. Immediate; direct; close; short. "The nearest way." 8. Close-fisted; parsimonious. Near may properly be followed by to before the thing approached'; but more frequently to is omitted, and the adjective or the adverb is regarded as a preposition. The same is also true of the word nigh. Synonym: Nigh, close, adjacent, proximate, contiguous, present, ready, intimate, dear. Origin: See Near. Source: Websters Dictionary (01 Mar 1998) |
| near drowning | Any almost drowning. All cases should be evaluated by a physician. Complications include aspiration pneumonia and adult respiratory distress syndrome. (27 Sep 1997) |
| near point | That point in conjugate focus with the retina when the eye exerts maximal accommodation. Synonym: punctum proximum. (05 Mar 2000) |
| near point of convergence | The point to which the visual lines are directed when convergence is at its maximum. (05 Mar 2000) |
| near point of the eye | <ophthalmology> The nearest point to the entrance of the pupil of the normal eye at which focus is attained without strain, 10 inches (250 mm) is the generally accepted distance. In very young people and in those with myopia, this distance is less. The near point recedes with age, possibly even causing farsighted condition,. (05 Aug 1998) |
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