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3. Psychological & Physiological

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20
6. Methods of Testing Vision

A person who can read 3/8-inch high letters clearly from a distance of 20 feet is considered to have normal vision and is said to have 20/20 vision.

A person with, say, 20/40 vision must be 20 feet from the eye chart to read what a person with normal vision would be able to read at 40 feet.

The DMV uses Snellen wall charts (letter charts) and an optical device, the Optec 1000 vision tester, to screen driver license applicants for a best-corrected distance visual acuity of no worse than 20/40.


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Lesson Summary


  

Lesson 3 Quiz


You will now answer 5 questions to test what you learned during this lesson. You must answer all questions correctly to receive completion credit for this lesson. You may answer the questions as many times as necessary to get them right.

You should review the lesson material if you don't do well on the quiz.

  1. The "P" in the SIPDE process stands for:


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  2. The colorless, odorless and poisonous gas from the exhaust is called:


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  3. When listening to your car radio, or other audio device:


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  4. A vehicles' "blind spots" are:


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  5. Your "Field of Vision" is:


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