If a person has a visual acuity of 6/12, he is said to see detail from 6 metres (20 ft) away the same as a person with “normal” eyesight would see it from 12 metres (39 ft) away.
What does N24 vision mean?
Near vision is assessed at a comfortable reading distance using words or pictures. It is always expressed in print size. Large print is usually in N18 (same as this leaflet) but can be larger. This is N24. This is N36.
What is the meaning of 6 6 vision with glasses?
6/6 vision describes being able to see at 6 metres what an average person can see at 6 metres. While 20/20 vision describes the same ability, but at 20 feet rather than 6 metres.
What is the meaning of 6 by 6 vision?
If you achieve a vision measurement of 6/6, this means that you can see at a distance of 6m what an average person also sees at the same distance.
What line is 6 12 on a Snellen chart?
Snellen recordings
| 6/60 | Top line (1 letter) |
|---|---|
| 6/12 | |
| 6/9 | |
| 6/6 | 7th line (approx7 letters) |
| 6/5 | (not included on all test charts) |
Is AD-6 a good eyesight prescription?
-6.00 is not a good eyesight prescription. This prescription is classified as severe myopia (high myopia). Your vision is somewhere between 20/600–20/1000 which means you have to be as close as 20 feets to read something a person with good eyesight can read at 600 feets (1000 feets if your vision is 20/1000).
What do the numbers on an eye prescription mean?
A positive number (indicated by a ‘+’ sign), indicates farsightedness, or hyperopia. A negative number (indicated by a ‘-’ sign) indicates nearsightedness, or myopia. On an eye prescription, 0.00 represents good vision that doesn’t need focusing power.
What is a 20/200 visual acuity equivalent to a prescription?
A visual acuity of 20/200 is roughly equal to a prescription of -2.50 diopters. Eye doctors can’t convert visual acuity (like 20/200) to an exact prescription, they can only give you a rough idea. Many different uncorrected prescriptions can yield a visual acuity of 20/200. The only way to know for sure is to have your eye doctor check.
What is a spectacle prescription in the UK?
In the UK, spectacle prescriptions follow a specific format, with several measurements per eye. Right and left are reversed – the table matches the Optometrist’s face-on view of your eyes. This prescription shows that the patient is hyperopic and needed a plus eye lens to correct their vision.
