Learn English ESL Free Video Lesson: 
Adjustable-Liquid Filled Glasses

This Learn English ESL free video lesson based on a TED Talk by Joshua Silver.

I just picked up my own eyeglasses and I was astonished at the price. Yes, they are progressive lenses and are protected from scratches, etcera. But still! I wouldn’t be able to afford them without good health insurance. If prescription glasses are this expensive for me, what about people do in poor countries? Do they even have access to vision care?

In this short learn English ESL free video lesson, Joshua Silver provides some answers.

Is this your first TED Talk lesson? If so, please read the quick instructions BEFORE watching the video so you can learn about the subtitles, transcript and quiz. 


Click below on the arrow to watch the video.



If this is your first time watching a TED Tuesday learn English ESL free lesson, here are some quick steps to follow. It’s easy and fun. And, I promise that if you watch one of these short videos each week, your English will really improve over time.

I hope you will enjoy this video and be inspired to learn more about this incredible work. You can find more information about Joshua Silver’s work here.


How to do this learn English ESL free lesson: 
It's as easy as 1-2-3!

Step 1Watch the video above.

Step 2: Take the quiz. Don't worry, I won't tell anyone if you don't do well.

Step 3: Read the transcript or watch the video with subtitles (in English or in your own language if available).



Step #2: Take the quiz 

Learn English ESL free lesson comprehension check:

Check your understanding by taking a short quiz. Click here to begin.


Step #3: Watch the video second time with subtitles &/or read the transcript

This is just part of the transcript. You can read the whole transcript by clicking below.


Transcript of Joshua Silver's speech: 

I'm going to tell you about one of the world's largest problems and how it can be solved.

I'd like to start with a little experiment. Could you put your hand up if you wear glasses or contact lenses, or you've had laser refractive surgery?

Now, unfortunately, there are too many of you for me to do the statistics properly. But it looks like -- I'm guessing -- that it'll be about 60 percent of the room because that's roughly the fraction of developed world population that have some sort of vision correction.

The World Health Organization estimates -- well, they make various estimates of the number of people who need glasses -- the lowest estimate is 150 million people. They also have an estimate of around a billion.

But in fact, I would argue that we've just done an experiment here and now, which shows us that the global need for corrective eyewear is around half of any population.

And the problem of poor vision, is actually not just a health problem, it's also an educational problem, and it's an economic problem, and it's a quality of life problem.


You can also watch this video on Ted's website.

Return from this learn English ESL free lesson to home page  or TED Talks main page


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