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  • Thanks. All that time opticians have tried to explain it to me and it never made sense. Your visual sequence explains it clearly.

  • such music is very annoying and desturbing in an educational video

  • good video ,medicos will find it beneficial ,thank you you tube

  • MEDICINES ARE MAKING EVERYONE DIABETIC....AND DOCTORS AND THE FDA ARE LETTING IT HAPPEN ALL IN THE NAME OF THE DOLLAR.

  • @ supzzzz :thanks for the concern .The explanation for the entire video in sequence is already provided,please find it besides or beneath the video as per your settings

  • Can u plz provide the explanation of d entire video???

  • it's an informative video....

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