Cone Adaptation Test

The test consists of 15, 2″ x 2″ (5 cm x 5 cm) red, blue, and white plastic chips designed to help parents, teachers, and doctors assess children’s visual difficulties in twilight. The test situation is not a formal test of night vision, but gives useful information on visual adaptation to lighting changes.

Description

The test consists of 15, 2″ x 2″ (5 cm x 5 cm) red, blue, and white plastic chips designed to help parents, teachers, and doctors assess children’s visual difficulties in twilight. The test situation is not a formal test of night vision, but gives useful information on visual adaptation to lighting changes.