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loading...| Preferred Name | Hyperopia | |
| Synonyms |
Hyperopia 远视 |
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| ID |
http://www.tcmkg.com/ISPO/ISPO_00000186 |
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| definition |
远视是指平行光线经过眼的屈光介质在视网膜后聚焦的不正常屈光状态。轻度远视的患者因为眼的调节功能大多不会有症状。新生儿出生时基本上都是远视，但随着新生儿年龄的增长，远视情况逐渐减少。 远视指平行光束经过调节放松的眼球折射后成像于视网膜之后的一种屈光状态，当眼球的屈光力不足或其眼轴长度不足时就产生远视。这种眼的光学焦点在视网膜之后，因而在视网膜上所形成的像是模糊不清的。为了看清近处物体，要利用调节力量把视网膜后面的焦点移到视网膜上，一般用凸透镜矫正，故远视眼经常处在调节状态，易发生眼疲劳。 A refractive error in which rays of light entering the eye parallel to the optic axis are brought to a focus behind the retina, as a result of the eyeball being too short from front to back. It is also called farsightedness because the near point is more distant than it is in emmetropia with an equal amplitude of accommodation. (Dorland, 27th ed) |
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| has_exact_synonym |
Hyperopia 远视 |
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| has_obo_namespace |
symptoms |
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| id |
ISPO:00000186 |
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| label |
Hyperopia |
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| notation |
ISPO:00000186 |
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| prefLabel |
Hyperopia |
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| subClassOf |
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