Stand behind a line 20 feet from the eye chart.

I couldn't read the top line of the eye chart.

In truth, I couldn't even tell that there was an eye chart.

The top letter on many eye charts represents 20/200 vision.

That's not even seeing the E on the eye chart.

You'll sit in front of an eye chart, with letters that get smaller as you read down each line.

A few weeks ago, he mastered the eye chart at 20/15 vision.

This is the standard eye chart used by doctors adapted for use at home.

Bosch was staring at an eye chart on the far wall of the room.

The next day, he could read the fourth line on the eye chart.