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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

need for particular purpose.

achieve

/əˈCHēv/

achieve
verb

To succeed in doing good, usually by working hard.

numbers

/ˈnəmbər/

numbers
noun other verb

arithmetical value expressed by word, symbol, or figure. Symbols such as 1, 2, 56, 793. To claim to be part of a larger group, series, set.

typical

/ˈtipik(ə)l/

typical
adjective

Normal; usual; expected.

positive

/ˈpäzədiv/

positive
adjective noun

Having the charge produced by electrons. positive quality.

required

/rəˈkwī(ə)rd/

required
adjective verb

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

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

If something will happen or not.

properly

/ˈpräpərlē/

properly
adverb

correctly or satisfactorily.

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 either one.

focussed

/ˈfōkəs/

focussed
verb

To keep your attention, concentration on one thing.

focusing

/ˈfōkəs/

focusing
verb

To keep your attention, concentration on one thing.

abbreviation

/əˌbrēvēˈāSH(ə)n/

abbreviation
noun

Shortened form of a word or phrase.

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