| I love shocking people in the exam chair. And a sure fire way to do it is to tell a lifelong nearsighted person they got better. They never believe me until I tell them why and how they got better. You see nearsighted people hate going to the eye doctor because it is almost a guarantee that they are going to get the bad news of “you got worse” or “we need to add some more power to your contacts”. I have good news for all you young nearsighted people. It eventually gets better. Women in their early thirties and men in their late thirties will virtually always get a little less nearsighted. The reason is because the lens inside your eye continues to grow from the time you are born til the time you die. It has new cells laid around it like an onion every year. And around mid 30′s the increased thickness of the lens leads to a farsighted shift in vision. So if you are nearsighted you become less nearsighted but if you are farsighted you become more farsighted. | "I can't believe 
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 Melanin is a brown pigment granule that is in everyone’s body except albinos. It is responsible for skin color and eye color. The more melanin you have in your skin the darker you are. Likewise, the more melanin you have in your iris the darker they are. Blue eyed people have very little melanin in their iris and brown eyed people have a lot more. Green and hazel eyes are in between.
People ask me all the time how does brown pigment make your eyes look blue? This is where it gets a little more scientific. There are different layers of the iris. A layer in the front of the iris is called the stroma and a layer in the back is called the epithelium. Blue eyes and brown eyes have the same amount of pigment in the epithelium. But if the stroma cells have very little pigment then the shorter blue wavelength of light interacts much more than red wavelengths and the blue light radiates throughout the iris causing it to look blue. |
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