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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:

Special thanks to The Free Dictionary for providing us with the information used in this web page

Video Vocabulary

exactly

/iɡˈzak(t)lē/

exactly
adverb

No more and no less than; precisely.

require

/rəˈkwī(ə)r/

require
verb

To demand that someone does something.

achieve

/əˈCHēv/

achieve
verb

successfully bring about or reach desired objective or result.

numbers

/ˈnəmbər/

numbers
noun other verb

arithmetical value expressed by word, symbol, or figure. Symbols such as 1, 2, 56, 793. To put numbers on things.

typical

/ˈtipik(ə)l/

typical
adjective

having distinctive qualities of particular type of person or thing.

positive

/ˈpäzədiv/

positive
adjective noun

characterized by presence of distinguishing features. positive quality.

required

/rəˈkwī(ə)rd/

required
adjective verb

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

dioptre

/dīˈäptər/

dioptre
noun

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

determines

/dəˈtərmən/

determines
verb

To establish the facts about; discover.

whether

/ˈ(h)weT͟Hər/

whether
conjunction

expressing doubt or choice between alternatives.

properly

/ˈpräpərlē/

properly
adverb

In an appropriate or correct manner.

neither

/ˈnēT͟Hər/

neither
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 nor other of two people or things. not the one nor the other of two people or things.

focussed

/ˈfōkəs/

focussed
verb

To keep your attention, concentration on one thing.

focusing

/ˈfōkəs/

focusing
verb

become able to see clearly.

abbreviation

/əˌbrēvēˈāSH(ə)n/

abbreviation
noun

shortened form of word or phrase.

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