| 영문 | hyperopia | 한글 | 원시 |
|---|---|---|---|
| 설명 | 눈에서 들어온 빛은 빛을 느끼는 눈의 부위인 망막에 정확히 촛점이 맞아야지만 사람은 그것을 뚜렷이 볼 수가 있다. 이런 굴절은 주로 각막에 의해서 이루어진다. 각막이란 눈의 검은 동자부위를 덮고 있는 원추형의 구조로 일종의 볼록렌즈로 빛을 모으는 역할을 한다. 그리고 각막에 의해서 꺽여진 빛은 다시 각막의 뒤에 있는 수정체라는 볼록렌즈에 의해서 굴절되는데 이 수정체는 미세하게 촛점을 맞히는 역할을 하는 것으로 그 두께를 자유로이 조절하여 먼 곳을 보거나 가까운 것을 볼 경우에 정확히 촛점을 망막에 맞게 한다. 원시란 수정체의 두께를 조절하지 않은 상태에서 평행광선이 망막 뒤에서 촛점을 맺는 경우를 말한다. 이것의 원인으로는 주로 각막의 굴절력이 약해서 각막을 통과한 빛이 적게 꺽이기 때문일 수도 있고 또는 망막에서 각막까지의 길이가 비정상적으로 짧은 경우도 있을 수가 있다. 그러므로 원시에는 볼록렌즈를 눈앞에 장치하여 굴절력을 증가시켜 주고 있다. |
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| ABC | absolute basophil count; absolute bone conduction; acalculous biliary colic; acid balance control; a... |
|---|---|
| ACD | absolute cardiac dullness; absolute claudication distance; acid-citrate-dextrose [solution]; actinom... |
| Ht | height of heart; heterozygote; hyperopia, total; hypothalamus |
| Hy | hypermetropia; hyperopia; hypophysis; hypothenar; hysteria |
| ABR | Absolute Bed Rest |
| ALC | Absolute Lymphocyte Count |
|---|---|
| ANC | Absolute Neutrophil Count |
| AP | Absolute Pitch |
| ACD | Absolute claudication distance |
| ARR | Absolute risk reduction |
| absolute hyperopia | Manifest hyperopia that cannot be overcome by an effort of accommodation. (05 Mar 2000) |
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| axial hyperopia | Hyperopia due to shortening of the anteroposterior diameter of the globe of the eye. (05 Mar 2000) |
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| manifest hyperopia | Hyperopia that can be compensated by accommodation. Synonym: facultative hyperopia. (05 Mar 2000) |
| curvature hyperopia | Hyperopia due to decreased refraction of the anterior ocular segment. (05 Mar 2000) |
| hyperopia | 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) |
| total hyperopia | That which can be determined after complete paralysis of accommodation by means of a cycloplegic. (05 Mar 2000) |
| facultative hyperopia | Hyperopia that can be compensated by accommodation. Synonym: facultative hyperopia. (05 Mar 2000) |
| latent hyperopia | The difference between total and manifest hyperopia. (05 Mar 2000) |
| absolute | 1. Loosed from any limitation or condition; uncontrolled; unrestricted; unconditional; as, absolute authority, monarchy, sovereignty, an absolute promise or command; absolute power; an absolute monarch. 2. Complete in itself; perfect; consummate; faultless; as, absolute perfection; absolute beauty. "So absolute she seems, And in herself complete." (Milton) 3. Viewed apart from modifying influences or without comparison with other objects; actual; real; opposed to relative and comparative; as, absolute motion; absolute time or space. Absolute rights and duties are such as pertain to man in a state of nature as contradistinguished from relative rights and duties, or such as pertain to him in his social relations. 4. Loosed from, or unconnected by, dependence on any other being; self-existent; self-sufficing. In this sense God is called the Absolute by the Theist. The term is also applied by the Pantheist to the universe, or the total of all existence, as only capable of relations in its parts to each other and to the whole, and as dependent for its existence and its phenomena on its mutually depending forces and their laws. 5. Capable of being thought or conceived by itself alone; unconditioned; non-relative. It is in dispute among philosopher whether the term, in this sense, is not applied to a mere logical fiction or abstraction, or whether the absolute, as thus defined, can be known, as a reality, by the human intellect. "To Cusa we can indeed articulately trace, word and thing, the recent philosophy of the absolute." (Sir W. Hamilton) 6. Positive; clear; certain; not doubtful. "I am absolute 't was very Cloten." (Shak) 7. Authoritative; peremptory. "The peddler stopped, and tapped her on the head, With absolute forefinger, brown and ringed." (Mrs. Browning) 8. <chemistry> Pure; unmixed; as, absolute alcohol. 9. Not immediately dependent on the other parts of the sentence in government; as, the case absolute. See Ablative absolute, under Ablative. <geometry> Absolute curvature, the sum of the optic and eccentric equations. <physics> Absolute space, space considered without relation to material limits or objects. Absolute terms. <mathematics> The be ginning, or zero point, in the scale of absolute temperature. It is equivalent to -273 deg centigrade or -459.4 deg Fahrenheit. Synonym: Positive, peremptory, certain, unconditional, unlimited, unrestricted, unqualified, arbitrary, despotic, autocratic. Origin: L. Absolutus, p. P. Of absolvere: cf. F. Absolu. See Absolve. <geometry> In a plane, the two imaginary circular points at infinity; in space of three dimensions, the imaginary circle at infinity. Source: Websters Dictionary (01 Mar 1998) |
| absolute agraphia | Agraphia in which not even unconnected letters can be written. Synonym: atactic agraphia, literal agraphia. (05 Mar 2000) |
| absolute alcohol | Water having been removed. Synonym: anhydrous alcohol. (05 Mar 2000) |
| absolute CD4 count | The number of helper T-lymphocytes in a cubic millimeter of blood. With HIV, the absolute CD4 count declines as the infection progresses. The absolute CD4 count is frequently used to monitor the extent of immune suppression in persons with HIV. Also called a T4 count. (12 Dec 1998) |
| absolute configuration | <chemistry> The three-dimensional arrangement of the atoms around the chiral centre of a molecule. (09 Oct 1997) |
| absolute dehydration | Actual water deficit as measured by a difference from the normal or from a given water content. (05 Mar 2000) |
| absolute eosinophil count | <haematology, investigation> A measurement (cells per microlitre) of the number of eosinophils in a blood specimen. This measurement is useful in the evaluation of autoimmune disease, allergies, eczema, leukaemia, asthma and hay fever. Normal absolute eosinophil counts are less than 350 cells/mcl (microlitre). (27 Sep 1997) |
| absolute filter | <apparatus> A fine-pored, steam-sterilisable filter that is used to trap airborne microorganisms. The filter's pores are about 2 micrometres in diameter, smaller than the particles it is designed to remove. (06 May 1997) |
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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