The characteristics of your eyes can impact how people view you, including the amount of money they might be willing to offer.

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Gaze upon the beauty of the iris. 

Absolutely, having an attractive eye color is great. However, recent studies indicate that the size of the pupil and the brightness of the iris are what truly captivate attention. 

“Brighter irises and larger pupils elicited greater donations,” noted experts from the Netherlands’ Leiden University in a recent report on how our eyes influence others’ perceptions of us — as well as their willingness to fork over charitable funds. 

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The research team carried out two experimental studies, asking participants to evaluate images of non-human primates — specifically, members of the monkey family — featuring modified eye appearances. 

In the initial research, 64 individuals were presented with images of 32 distinct species, such as chimpanzees, bonobos, and pig-tailed macaques. The pupil sizes of these animals were altered to look either constricted or dilated, while their iris brightness remained unchanged. 

"The researchers inquired about the amount of money participants would be willing to contribute for each portrait, while also asking them to evaluate the portraits based on their perceived cuteness, friendliness, and attractiveness," the investigators reported. They observed that donations “rose for portraits featuring dilated pupils, but only in species that possess bright irises.”

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Participants also found animals with larger pupils to be cuter, friendlier, and more appealing compared to those without this eye-catching feature. 

In their second investigation, analysts adjusted the size of the pupil as well as the brightness of the iris. 

The experts concluded, “Contributions were significantly higher when participants view