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This is done most easily by use of an eye chart ... you know, the one with the big E, followed by progressively smaller fonts as you read downwards.

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Q: How is vision measured?
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Related questions

What is the vision of marks and Spencer?

To be the standard against which all others are measured.


Which is measured by span of vision?

memory drum, tachistoscope, mason's disk, metronome


Is there such thing as 15-15 vision?

It would be the same as 20-20 except measured at a different length.


What is the normal range of WBC urine?

A WBC count is measured in a urinesediment, the normal range is 5-10 per field of vision (400x) in 10-20 μl urine.


What is diurnal vision?

Diurnal vision is vision that is specialized for daytime, as opposed to nocturnal vision, which is vision specialized for nighttime.


Vision in different language?

Vision in French: vision, in Spanish: visión, in German: Vision, in Italian: visione.


When was A Vision's Just a Vision created?

A Vision's Just a Vision was created on 2008-12-07.


What are central vision fringe vision and peripheral vision?

Central vision refers to the clear, detailed vision that occurs at the center of our field of view. Fringe vision includes the area surrounding central vision and provides some detail but less clarity. Peripheral vision refers to the outer edges of our vision field, detecting motion and objects in our surroundings but with limited detail.


What are the two types of vision?

The two main types of vision are central vision and peripheral vision. Central vision is focused vision that allows us to see details clearly, while peripheral vision detects motion and objects in our surroundings.


What are three sentences for the word vision?

You haven't the vision to leads this company! My vision is 20/20. My vision was blocked by tree branches the overhanging the intersection.


What does it mean if you have 50 20 vision?

Your vision at 20ft is my vision at 50ft.


What is the answer for hidden meanings brain teaser vision vision?

Double Vision