Color vision tests check your ability to distinguish colors.

The rain made it impossible to distinguish colors and devices.

Rods are very sensitive to light, but do not distinguish colors.

Cones distinguish colors, but are less sensitive to dim light.

They are asked to distinguish colors and numbers.

He often switches to a special pair of bifocals to help him distinguish colors.

You can demonstrate this be trying to distinguish different colors in a darkened room.

In addition, he might have had a problem distinguishing colors, officials said.

Some people are "color blind", that is, they cannot distinguish certain colors.

This makes it possible to distinguish different colors.