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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 demand that someone does something.

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

Being sure about something; knowing the truth. positive quality.

required

/rəˈkwī(ə)rd/

adjective verb

officially compulsory, or otherwise considered essential. To need something, to make it necessary.

dioptre

/dīˈäptər/

noun

.

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 or the other. not the one nor the other of two people or things.

focussed

/ˈfōkəs/

verb

To keep your attention, concentration on one thing.

focusing

/ˈfōkəs/

verb

To see clearly by adjusting your eyes or a camera.

abbreviation

/əˌbrēvēˈāSH(ə)n/

noun

shortened form of word or phrase.

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