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Rare Green Eyes Lots of genetic traits are rare. For example, left-handedness occurs in just 10% of the world’s population, only 11% have naturally curly hair, and a mere 4% have blonde hair. But of all of the seven billion-plus people on planet Earth, only 2% can claim to have one unique trait. So, what…
Much has been studied and said about the known, perceived, and changing differences and similarities between men and women. Did you know that, among other physical differences, men and women have some differences when it comes to eye health and vision, as well? Lets take a look at some of the differences when it comes…
Have you ever met a blue-eyed child with two biologically brown-eyed parents? Or have you ever wondered if the eye color of an expected child can be predicted? What Determines Eye Color? The color of our eyes is determined by how much melanin (pigment) is present in our irises; the more pigment present, the darker…
When you go to the eye clinic, you may hear many terms used that you are not sure of the definition. When your eye doctor says your vision is 20/20 (or 20/100), what exactly does he mean? If the eye doctor tells you that your daughter may need vision therapy, what exactly is vision therapy? In this post we’ll explain common vision terms used at the eye doctor’s clinic and what they mean.
Have you ever had the eerie feeling that your eyes might be playing tricks on you? Chances are you’ve seen many optical illusions that look like one thing – until they don’t. Or perhaps it’s a still image that looks like – is it? – it’s definitely moving. Right? . . . Interestingly, the term…
Of all human behaviors, crying is one of the most unique and curious. In fact, emotional crying is the only physiological function that is exclusive to humans. We cry when we are sad, hurt, tired, frustrated, angry . . . but to what end? Why do we cry? Three Types of Tears As humans, not…
Eyes are the window to a person’s soul, the old saying goes. And science is backing it up. The whites of your eyes (known as the sclera), your pupils, and the muscles of your face and eyelids all perform together to communicate with others what you are thinking and feeling. In fact, scientists can determine…
Can you imagine wearing glasses without the part of the frame known as the temple? How about constantly carrying around two pairs of glasses and interchanging them instead of using bifocals? Eyeglasses have come a long way since they were invented. In fact, no one is sure when exactly they were invented.
Have you ever seen posters that look like computerized abstract art, and had someone tell you that there is really a recognizable 3D image in them? If so, you probably fall into one of two camps of people: those who can see the image, and those who can’t. If you fall into the second camp,…