HEALTH
Your pupils can count… sort of
WORDS YASEMIN SAPLAKOGLU
Research revealed that pupils expand when there are more objects to look at
The pupils of your eyes might be able to count, in a manner of speaking. Recent research suggests pupil size can change based on the number of objects an individual observes in their visual field. Pupils are holes located in the centre of the eye which change size to regulate the amount of light that enters the eye based on how much is available in the environment. The response of our pupils to light is a basic sensory response, but pupils have been found to change size based on factors other than light, such as arousal.