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Glasses and Contact Lens Prescription Explained | Eyes Explained

354,592 views

Eyes Explained

Video Language:

  • English

Caption Language:

  • {{captionLanguage | language_name}} ({{captionLanguage}})

Accent:

  • English (US)

Speech Time:

99%
  • 6:44 / 6:48

Speech Rate:

  • 192 wpm - Fast

Category:

  • Education

Tags :

Intro:

Video Vocabulary

exactly

/iɡˈzak(t)lē/

adverb

No more and no less than; precisely.

require

/rəˈkwī(ə)r/

verb

To need to do something, to make it necessary.

achieve

/əˈCHēv/

verb

successfully bring about or reach desired objective or result.

numbers

/ˈnəmbər/

noun other verb

arithmetical value expressed by word, symbol, or figure. Symbols such as 1, 2, 56, 793. make as total.

typical

/ˈtipik(ə)l/

adjective

Normal; usual; expected.

positive

/ˈpäzədiv/

adjective noun

characterized by presence of distinguishing features. positive quality.

required

/rəˈkwī(ə)rd/

adjective verb

officially compulsory, or otherwise considered essential. To demand that someone does something.

dioptre

/dīˈäptər/

noun

unit of refractive power, which is equal to reciprocal of focal length in metres of given lens.

determines

/dəˈtərmən/

verb

To control exactly how something will be or act.

whether

/ˈ(h)weT͟Hər/

conjunction

If something will happen or not.

properly

/ˈpräpərlē/

adverb

In an appropriate or correct manner.

neither

/ˈnēT͟Hər/

adjective adverb conjunction determiner pronoun

Not one or the other not either none of two things. Similarly not, also not. Not in either case. not one nor other of two people or things. Not either one.

focussed

/ˈfōkəs/

verb

become able to see clearly.

focusing

/ˈfōkəs/

verb

To see clearly by adjusting your eyes or a camera.

abbreviation

/əˌbrēvēˈāSH(ə)n/

noun

Shortened form of a word or phrase.

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