Similarly, 6/9 vision means a person can see at a distance of 9 meters what you see at 6 meters.
What distance 6/12 vision means?ĭistance 6/12 vision means that you can see at a distance of 6 meters what a normal person can see at a distance of 12 meters, meaning thereby you have poor vision and need to stand closer to see the object. A patient may need a different number of eye corrective, for example, a person may see normally with a diopter of 0.5 while another may need 2.5D depending on the eyesight. But if you need glasses to read it then you have poor vision. If you can read the last letter without any glasses then your visual acuity is 6/6 that is normal. The patient sits at a distance of 6 meters or 20 feet away from the eye chart. If you have ever had your eyes checked up, then you must have read the chart of letters against the wall, it is your eye power and visual acuity test. It is a way to examine a person’s ability to notice the small details at distance. An optometrist measures your visual acuity with the help of a chart of letters. Visual acuity refers to the clarity and sharpness of vision. Many optometrists use an improved chart to measure visual acuity now. The topmost rows have the biggest letters and the size of the letters keeps decreasing as you go down.Ī person with visual acuity 20/200 is termed as “legally blind” however different countries have different measurements to determine blindness. The 11 rows of letters are in decreasing order with respect to the sizes of these block letters.
Snellen chart consists of 11 rows of letters that are used to measure visual acuity. These measurements are called, ‘visual acuity standard’ according to the Snellen chart, given by the ophthalmologist, Snellen.
The only difference in 6/6 and 20/20 is in the unit of measurements. And a normal vision is 6/6 or 20/20, which means you can see at 6 meters what a normal person also sees at 6 meters, likewise 20/20 means you can see at 20 feet what a person with normal vision can see at 20 feet. Explore ways to get support to common device issues at a glance.What distance 6/12 vision means and how to cure it? What is 6/6 OR 20/20 vision?Īn optometrist measures vision at a standard distance of 6 meters or 20 ft. Zebra’s Self-Service Center is your go-to spot for online tools, resources and support you need to get answers right away.
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