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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

used to emphasize accuracy of figure or description.

require

/rəˈkwī(ə)r/

verb

need for particular purpose.

achieve

/əˈCHēv/

verb

To succeed in doing good, usually by working hard.

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

having distinctive qualities of particular type of person or thing.

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 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

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. used before first of two alternatives to indicate that they are each untrue. Not in either case. Not one or the other. not the one nor the other of two people or things.

focussed

/ˈfōkəs/

verb

To see clearly by adjusting your eyes or a camera.

focusing

/ˈfōkəs/

verb

To keep your attention, concentration on one thing.

abbreviation

/əˌbrēvēˈāSH(ə)n/

noun

Shortened form of a word or phrase.

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