Word
presbyopias
/ˌprezbiˈəupiə/
noun
老花眼；老视
presbyopias is the plural of presbyopia.
核心释义
The inability of the eye, due to ageing, to focus on nearby objects.
- 1.
因衰老导致的眼睛无法聚焦于近处物体。
Inability of the eye, due to ageing, to focus on nearby objects.
- 2.
因45岁后晶状体弹性减弱,聚焦近处物体的能力下降
a reduced ability to focus on near objects caused by loss of elasticity of the crystalline lens after age 45
因衰老导致的眼睛无法聚焦于近处物体。；因45岁后晶状体弹性减弱,聚焦近处物体的能力下降；老花眼；[医] 老视
用法In use
My father started wearing reading glasses when he developed presbyopia in his mid-40s.
用法提示：指因老花眼导致看近物困难，需佩戴眼镜。
Presbyopia is a common condition that typically becomes noticeable after age 40.
用法提示：用作名词，描述一种与年龄相关的眼部状况。
She found herself holding books at arm's length to compensate for her presbyopia.
用法提示：指通过调整距离来应对老花眼引起的聚焦困难。
develop presbyopia
develop 与 presbyopia 搭配表示“出现老花”；presbyopia 是不可数名词，通常不加冠词，也没有常用复数。
Most people develop presbyopia after the age of forty.
大多数人在四十岁以后会出现老花眼。
presbyopia makes it difficult to do sth
用于说明老花眼带来的具体不便；it 是形式宾语，真正的宾语是后面的不定式。
相关词与表达Connections
近义词Synonyms
易混词Confusing words
- hyperopia
- 远视 · presbyopia 指因衰老（通常45岁后）晶状体弹性下降导致看近处困难，与年龄相关；hyperopia 是屈光性远视，多因眼球前后径过短，任何年龄都可存在，看远通常清晰、看近费力。两者都影响看近，但成因和是否与衰老绑定不同。
- myopia
- 近视 · presbyopia 是看近处模糊的衰老现象；myopia 是看远处模糊的屈光不正，通常因眼轴过长。二者焦点问题方向相反，不能互换。
- presbycusis
- 老年性耳聋 · presbyopia 与 presbycusis 都以 presby- 开头、都指衰老相关功能衰退，但前者是视力（看近困难），后者是听力（老年性听力下降）。词形相近，语义分属眼与耳。
词族
学习提示Learner notes
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.