Bad Eyesight Vocabulary--from VoiceTube

A VoiceTube lesson about bad eyesight, which is useful to Chinese English learners. Among others, it presents a 9'45" video, in which the teacher teaches some bad eyesight vocabulary words in a vivid way.

http://tw.blog.voicetube.com/2015/04/17/%E3%80%90%E7%94%9F%E6%B4%BB%E5%AF%A6%E7%94%A8%E3%80%91%E8%BF%91%E8%A6%96%E5%B9%BE%E5%BA%A6%E5%88%A5%E7%94%A8degree%EF%BC%8C%E7%BE%8E%E5%9C%8B%E4%BA%BA%E5%85%B6%E5%AF%A6%E9%80%99%E6%A8%A3%E8%AC%9B

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I'd like to embed the first video in my blog in case it is removed.

Let's review some words:

be nearsighted

be farsighted

have myopia

have hyperopia

have stigmatism

glasses

bifocals

contacts (contact lenses)

colored contacts

optometrist

laser surgery

have 20/20 vision