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词汇 Refraction error
分类 英语词汇 英语翻译词典
释义

Refraction error

中文百科

眼屈光不正 Refractive error

(重定向自Refraction error)

从视光学上讲,眼在休息状态下,平行光线经过眼屈光系统的屈光作用在视网膜形成焦点,称为正视眼(emmetropia)。所有眼在休息状态下平行光线不能在视网膜成焦点者称为非正视眼(ampetopia)或屈光不正(errors of refraction)。

英语百科

Refractive error 眼屈光不正

(重定向自Refraction error)
Fundus of person with retinitis pigmentosa, early stage
A doctor uses a trial frame and trial lenses to measure the patient's refractive error.
DALYs per 100,000 people due to refractive errors in 2004.[9]
  no data
  less than 100
  100-170
  170-240
  240-310
  310-380
  380-450
  450-520
  520-590
  590-660
  660-730
  730-800
  more than 800

A refractive error, or refraction error, is an error in the focusing of light by the eye and a frequent reason for reduced visual acuity.

The number of people globally with refractive errors has been estimated from 800 million to 2.3 billion.

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