Question 1

what is a visual acuity test?

Accepted Answer

: A test of visual acuity measures how many clock hours an object viewed at a given distance will subtend on your retina.

Question 2

how can i know my visual acuity?

Accepted Answer

Compare to normal: You can get a rough idea if you have 20/20 by comparing your sight with someone who has perfect vision (or perfect with correction).  Both of you view something at the limits of clarity (a sign far away) and if you both read it well, then you are 20/20.  To determine lesser sight, you will need an eyechart and a proper lane.

Question 3

what's the highest visual acuity?

Accepted Answer

20/08: A number of younger people can see 20/15 and a few 20/10.  I have not seen one at 20/08 but I have read about them.  The highest acuity of all is in raptor birds (hawks, eagles, etc.) who can see down to 20/02 according to some accounts.

Question 4

how to find out my visual acuity?

Accepted Answer

Testing: You can get a rough idea if you have 20/20 by comparing your sight with someone who has perfect vision (or perfect with correction). Both of you view something at the limits of clarity (a sign far away) and if you both read it well, then you are 20/20. To determine lesser sight, you will need an eye chart and a proper lane. It is best to have an ophthalmologist measure it for you.

Question 5

what is combined visual acuity (combined vision)?

Accepted Answer

Using both eyes: Combined visual acuity is the best that you can see with both eyes open. Though one would think that it can only be as good as the better seeing eye, often combined visual acuity is better than that. In other words, one can usually see better with both eyes open than with each eye individually.

Question 6

i was wondering what does 6/5 visual acuity mean?

Accepted Answer

This is a metric: Measurement of vision. This would be a vision equivalent to 20/15 or better the 20/20.

Question 7

what is the definition or description of: visual acuity?

Accepted Answer

Seeing: Visual acuity is simply how well a person sees, there are international standards.For comparison that transcend language  and even metric versus english, it is most commonly based on distance of 20 feet or 6 meters. There is also near vision standards.

Question 8

is there a rough visual acuity test that i can easily perform?

Accepted Answer

Yes: There are a number of on-line tests of near and distance acuity. For example, www.Preventblindness.Org/eye_tests/ is a good resource. There are also vision test apps for iphone and other mobile devices.

Question 9

when documenting visual acuity rating what do the numbers mean?

Accepted Answer

Ratio: The ratio is an indirect way of measuring how small of an object can be resolved independent of the distance at which it is viewed. For snellen fractions (20/20 for example), the top number is represents the testing distance and the bottom number is an indirect measurement of the size of the object.

Question 10

is there a way to find out your visual acuity with an app or website?

Accepted Answer

Vision screening: A rough acuity can be gained from any number of apps/sites - search for vision/eye exam and follow the instructions.   If you are wondering about reading glasses - go to a place that sells them and they usually have a chart you can read with different readers on.   None of this is as good as  good eye exam.

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Doctor answers about:

Visual acuity

A member asked:

What is a visual acuity test?

A member asked:

How can i know my visual acuity?

A member asked:

What's the highest visual acuity?

A member asked:

How to find out my visual acuity?

A member asked:

What is combined visual acuity (combined vision)?

A member asked:

I was wondering what does 6/5 visual acuity mean?

A member asked:

What is the definition or description of: visual acuity?

A member asked:

Is there a rough visual acuity test that i can easily perform?

A member asked:

When documenting visual acuity rating what do the numbers mean?

A member asked:

Is there a way to find out your visual acuity with an app or website?

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