What line is 20 40 on eye chart?

The third line is equivalent to 20/40, it is the driver’s test line.

What is a bad score on the eye test?

If your number is between -0.25 and -2.00, you have mild nearsightedness. If your number is between -2.25 and -5.00, you have moderate nearsightedness. If your number is lower than -5.00, you have high nearsightedness.

What does a 20 40 vision mean?

Vision or visual acuity is tested by reading a Snellen eye chart at a distance of 20 feet. If you have 20/40 vision, it means that when you stand 20 feet away from the chart you can only see what a normal human can see when standing 40 feet from the chart.

What do the numbers in a vision test mean?

The first number in the term is the distance a person with normal visual acuity stands from the eye chart, measured in feet. The second number is the distance the tested person stands while reading the same line on the eye chart, measured in feet.

What are the results of a vision test?

If you are not wearing glasses or contact lenses, this result will be your “uncorrected” acuity. If you are wearing some type of correction, the results are your “corrected” visual acuity. Line 1: If you are only able to read the big E, your vision is approximately 20/200.

What are the lines on the vision test?

Line 4, 5 & 6: These lines are 20/30, 20/20 and 20/10 respectively. Visual acuity in this range is considered to be “normal”. This test is a self-screening test which is intended to give you an idea of what your distance visual acuity is. Several factors will effect the results of this test such as lighting, screen glare, and monitor quality.

How to take a test for distance vision?

Only eye care professionals can take decisions on medical treatment, diagnosis or prescription. Some guidelines for the test 1 Place yourself 1 meter from the screen. 1 Place yourself 40 centimeters from the screen. 2 If you have glasses for distance vision or glasses with progressive lenses, keep them on.

What are the numbers on the eye test?

Understanding your eye test results: the numbers explained The numbers on your spectacle prescription are shown for your right eye (indicated as RE or sometimes OD – the Latin for oculus dexter, meaning right eye) and your left eye (LE or OS – oculus sinister).