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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. Particular songs or dances performed during shows. To claim to be part of a larger group, series, set.

typical

/ˈtipik(ə)l/

adjective

Normal; usual; expected.

positive

/ˈpäzədiv/

adjective noun

Showing that a chemical is present in a test. 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

cause to occur in particular way.

whether

/ˈ(h)weT͟Hər/

conjunction

expressing doubt or choice between alternatives.

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

become able to see clearly.

abbreviation

/əˌbrēvēˈāSH(ə)n/

noun

Shortened form of a word or phrase.

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