New 6 Metre Snellen Chart
Pics. The dvla 6 metre test chart includes the 7.5 line introduced by the dvla. Exhibiting how far you are far from the chart, the first number of your visual acuity measurement is generally 6 meters or twenty feet.
Precision vision uses stylized photos, called patti pics, for which snellen's 5 × 5 principle is followed. Snellen chart is a poster that serves to detect a person's sharp vision. Snellen charts are named after the dutch ophthalmologist herman snellen, who other acuities are expressed as ratios with a numerator of 6.
The normal height for the letter a is 88 mm, and the viewing distance is 6 meters (~20 feet).
At this distance, the symbols on the line representing. Because there is a difference between the measurement system used in indonesia (as well as most other countries in the world) and the snellen chart metric is stated in comparison of 6 meters (6/6, 6/9, 6/12, and so on until 6/60). 3 meter 6 meter snellen alternative eye charts, eyeline snellen 6 metre wall chart for children product view, download free eye charts a4 letter size 6 meter 3, eye test chart 3 metre distance health and care, visual aquity and contrast sensitivity. Unit 4 snellen chartmedical equipment, operator care and maintenance.