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Eye for Science

 

 

How many times do we think about our eyes and the power they hold?

Below are some facts on how we see the world, and optical illusions to test your eyesight.

 



Science of the Eyes

 

 

The video below explains how our eyes work together with our brains to make sense of what we view.

 

 

 

Optical Illusions

  

Occasionally, we might feel that our eyes are playing tricks on us. Are the clouds really moving or are the pictures rotating? These are known as optical illusions.

 

Optical illusions, more appropriately known as visual illusions, involves visual deception. Due to the arrangement of images, the effect of colours, the impact of light source or other variables, a wide range of misleading visual effects can be seen.

 

If you've ever struggled to see the hidden image in a single-image stereogram, you may have discovered that not everyone experiences visual illusions in the same way. For some illusions, some people simply are not able to see the effect.

 

An example of a classic optical illusion is the Hermann Grid illusion:

 

hermanngridillusion 

 

 

In the Hermann Grid Illusion, the white dots at the center of each square seem to shift from white to gray. It was first discovered by a physiologist named Ludimar Hermann in 1870. When the viewer looks at the grid, the white dots, and the center of each 'corridor' seem to shift between white and gray. When the viewer focused his or her attention on a specific dot, it is obvious that it is white. But as soon as attention is shifted away, the dot shifts to a gray color.

 

(Source: How Do Optical Illusions Work? (verywellmind.com), 2021)

 

Test your brain power with the optical illusions game here: Optical Illusions Test Unlocks Your Hidden Brain Power - YouTube

 

  • Check out the book recommendations below!

    Motion Commotion! Optical Illusions

     

    motion commotion 

     

    Authors: Spencer Brinker

    Call No.: J 152.14 BRI

    Publisher: Bearport Publishing Company, 2022

     

    It's moving! Or is it? Optical illusions are tricks that our eyes and brain play on us to make us see things differently-like still images that appears to float, spin, or wiggle along. Explore magnificent moving illusions and learn the science behind what makes them work. Then, take a turn making your own optical illusion. Get ready to be eye-mazed!

     

    Synopsis provided by publishers.

     

     

    Eyefoods: The Complete Eye Health & Nutrition Guide

     

    Eyefoods 

     

    Author: Laurie Capogna, OD

    Call No.: A 617.70654 CAP -[HEA]

    Publisher: Robert Rose, 2019

     

    A groundbreaking plan for improving eye health and for slowing and preventing eye disease, from a highly respected optometrist who is the founder of Eye Wellness.

     

    In Eyefoods®: The Complete Eye Health and Nutrition Guide, optometrist Dr. Laurie Capogna offers a groundbreaking plan for improving eye health and slowing or preventing common eye disorders. This comprehensive and easy-to-understand guide includes in-depth research based on 20+ years of clinical experience from a pioneer in the field, supported by recent scientific findings. With expert advice and 100+ companion recipes highlighting the power of nutrient-rich foods and supplements, Eyefoods®: The Complete Eye Health and Nutrition Guide will help you keep your eyes happy and healthy, while improving your overall health and well-being!

     

    Synopsis from publishers.

    (All websites were last accessed on 30 January 2024)