What is photophobia? Well, according to definition it is "painful sensitivity to strong light." Now, of course, who wouldn't have that problem? It's why we wear sunglasses! But it is much more than that! Ironically, you won't find the information I offer in this book on the Internet and that's because most people are not aware that photophobia is an 'umbrella' term referring to how the eye filters different forms of light and for some, can cause reading and writing problems.