fbpx

Predator or Prey?

A study of the pupils of 214 species of animal, published in the journal Science Advances, concluded that those with vertical pupils (like a cat) are predators, while animals with horizontal pupils are usually prey.

The vertical pupil allows hunters to better estimate their distance from prey and optimizes stereoscopic vision. When a vertical pupil contracts, image quality remains high whereas a circular pupil will blur vision when contracting. Larger predators, like lions and tigers, have more rounded pupils since, being higher from the ground, they have less need to correct retinal blur.

Horizontal pupils on prey animals produce a panoramic image and are better for peripheral vision. Study lead Dr. Martin Banks explains, “Grazing animals’ eyes can rotate by 50 degrees or more in each eye, a range 10 times greater than human eyes. When goats, antelope and other grazing prey animals put their head down to eat, their eyes rotated to maintain the pupils’ horizontal alignment with the ground.” More light coming in from the sides means a better chance to spot approaching predators and knowing when to flee.

Further information: http://www.sci-news.com/biology/science-pupils-shape-eyes-animals-03112.html

Photos: Jo Naylor CC BY 2.0, David Corby CC BY 2.5

 

Featured Posts

Voila Optik March-April 2024 WestGroupe Izumi

Elevate Your Style with OS-9369: A Fusion of Bold Elegance and Playful Sophistication

Introducing Izumi OS-9369, a captivating blend of bold elegance and playful charm.

Learn More

Myopia Profile Visitor Data Indicates Surging Global Interest in Research, Interventions, and Clinical Practice

Professional and Parent Website Use Reveals Record Engagement and Impact

Read more
Appoint of Louise Courville

Louise Courville Appointed to the VuePoint Team

Louise Courville appointed to spearhead growth initiatives of VuePoint publications and services.

Read more

Transitions ® GEN S – Now Available in Canada

Transitions® GEN S™, the ultra-responsive to light lens from Transitions Optical has launched in Canada.

Read more

CooperVision Extends Partnership with Plastic Bank, Adds Vision Care Program for Collectors

Collaboration Expands Support for People + Planet

Read more
Voila Optik March-April 2024 WestGroupe Izumi

Elevate Your Style with OS-9369: A Fusion of Bold Elegance and Playful Sophistication

Introducing Izumi OS-9369, a captivating blend of bold elegance and playful charm.

Learn More

Myopia Profile Visitor Data Indicates Surging Global Interest in Research, Interventions, and Clinical Practice

Professional and Parent Website Use Reveals Record Engagement and Impact

Read More
Appoint of Louise Courville

Louise Courville Appointed to the VuePoint Team

Louise Courville appointed to spearhead growth initiatives of VuePoint publications and services.

Read More

Transitions ® GEN S – Now Available in Canada

Transitions® GEN S™, the ultra-responsive to light lens from Transitions Optical has launched in Canada.

Read More

CooperVision Extends Partnership with Plastic Bank, Adds Vision Care Program for Collectors

Collaboration Expands Support for People + Planet

Read More
Voila Optik March-April 2024 WestGroupe Izumi

Elevate Your Style with OS-9369: A Fusion of Bold Elegance and Playful Sophistication

Introducing Izumi OS-9369, a captivating blend of bold elegance and playful charm.

Learn More

Myopia Profile Visitor Data Indicates Surging Global Interest in Research, Interventions, and Clinical Practice

Professional and Parent Website Use Reveals Record Engagement and Impact

Read more
Appoint of Louise Courville

Louise Courville Appointed to the VuePoint Team

Louise Courville appointed to spearhead growth initiatives of VuePoint publications and services.

Read more

Transitions ® GEN S – Now Available in Canada

Transitions® GEN S™, the ultra-responsive to light lens from Transitions Optical has launched in Canada.

Read more

CooperVision Extends Partnership with Plastic Bank, Adds Vision Care Program for Collectors

Collaboration Expands Support for People + Planet

Read more
Voila Optik March-April 2024 WestGroupe Izumi

Elevate Your Style with OS-9369: A Fusion of Bold Elegance and Playful Sophistication

Introducing Izumi OS-9369, a captivating blend of bold elegance and playful charm.

Learn More

Myopia Profile Visitor Data Indicates Surging Global Interest in Research, Interventions, and Clinical Practice

Professional and Parent Website Use Reveals Record Engagement and Impact

Read more
Appoint of Louise Courville

Louise Courville Appointed to the VuePoint Team

Louise Courville appointed to spearhead growth initiatives of VuePoint publications and services.

Read more

Transitions ® GEN S – Now Available in Canada

Transitions® GEN S™, the ultra-responsive to light lens from Transitions Optical has launched in Canada.

Read more

CooperVision Extends Partnership with Plastic Bank, Adds Vision Care Program for Collectors

Collaboration Expands Support for People + Planet

Read more