Visual acuity is the clarity of vision when measured at a distance of 20 feet. Learn more about what it means, ... The Snellen test uses a chart that contains letters or symbols.

The Snellen Scale tests a person's visual acuity which features several rows of letters that gradually gets smaller the further down the chart. Normal visual acuity is called 6 / 6, ...

The Snellen Scale tests a person's visual acuity which features several rows of letters that gradually gets smaller the further down the chart. Normal visual acuity is called 6 / 6, ...

The Snellen Scale tests a person's visual acuity which features several rows of letters that gradually gets smaller the further down the chart. Normal visual acuity is called 6 / 6, ...

The Snellen Scale tests a person's visual acuity which features several rows of letters that gradually gets smaller the further down the chart. Normal visual acuity is called 6 / 6, ...

Visual acuity is a measure of how small a detail that is visible can be, and still be identified by a person. The most common way of testing vision is to use an eye chart, (the kind that you see ...

The Snellen Scale tests a person's visual acuity which features several rows of letters that gradually gets smaller the further down the chart. Normal visual acuity is called 6 / 6, ...

The Snellen Scale tests a person's visual acuity which features several rows of letters that gradually gets smaller the further down the chart. Normal visual acuity is called 6 / 6, ...

Here's everything you need to know about the Snellen eyesight test and the other minimum eyesight requirements, according to the DVLA's current… ...