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关于角膜接触镜与框架眼镜的视野差异的说法不正确的是()。

发布日期:2021-10-12

关于角膜接触镜与框架眼镜的视野差异的说法不正确的是()。
A

正透镜框架眼镜有环形盲区

B

负透镜框架眼镜有环形复像区

C

框架眼镜的视野比角膜接触镜的视野大

D

框架眼镜的视野比角膜接触镜的视野小

试题解析

框架眼镜

框架眼镜是日常最常见的一种眼镜。外观漂亮的框架眼镜不但能屈光矫正还可起到美观的作用。一副框架眼镜通常由镜片、镜圈、鼻托、桩头和镜脚等主要部分构成。材质主要有金属、塑料或树脂、天然材料等,分为全框、半框、无框眼镜等类型。

中文名
框架眼镜
类型
眼镜

负透镜

负透镜亦称为负球透镜,镜片的中间薄,边缘厚,呈凹形,所以又叫凹透镜。凹透镜对光有发散作用,又称“发散透镜”。近视眼镜是负透镜。负透镜包括双凹透镜、平凹透镜、凸凹透镜(注意:凸凹透镜是凹度大于凸度,凹凸透镜是凸度大于凹度的)等形式。

中文名
负透镜
别名
凹透镜
类别
透镜
外文名
Negative lens
性质
中间薄周边厚的透镜
领域
光学

环形

数学中,环形(annulus)是一个环状的几何图形,或者更一般地,一个环状的对象。几何学中通常所说的环形就是圆环,一个大圆盘挖去一个小同心圆盘剩下的部分。圆环的对称性非常强,是一个以圆心为对称中心的中心对称图形,也是有无数条对称轴的轴对称图形。圆环的几何中心就是圆心。一个以圆心为中心,半径为内外半径的几何平均值的反演保持圆环整体不变,将内外边缘互换,内圆内部与外圆外部互换。

中文名
环形
外文名
ringy;annular
拼音
huán xíng
注音
ㄏㄨㄢˊ ㄒㄧㄥˊ

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此试题出现在

医药卫生技能鉴定考试

眼镜定配工

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