Eyes are such an important part of our lives but not everyone has perfect vision. About 14 million people have an eye problem. Do you ever sit and wonder why? Well, after you learn about how the eye works, types of problems, solutions, and tears, you can stand up and learn about something else.
How you see
In the whole world, there are four different types problems people have with eyesight, and about 14 million people have a type of problem. First of all, the eye is supposed to have something called the Cornea (a transparent part in the front of the eye) focus the light then pass it to the lens, which directs it to the retina. The retina is found between 3 different tissue layers. Light is supposed to strike the retina perfectly but when it doesn't, that’s one of four seeing problems.
What is Wrong With my Eyes?
All the problems with vision are Myopic, Hyperopic, Astigmatism, and Presbyopia. But all these “Sciencey” words are actually quite simple. Myopic means “Short Sighted”. When you are short sighted, the light passes a little more behind the retina and you can see up close really well but things far away are a bit more unfocused and blurry. Hyperopic means “farsighted”. If you are farsighted, the light passes a bit more in front of the retina and the way it works is that you see things far away clearly but things up close are blurry. Astigmatism means when everything is blurry whether it's close or far away. Last but not least their is presbyopia, it can happen when you are around 40 years old and it is basically farsighted caused by the loss of flexibility in the lens.
To fix the problem, you can get your own special pair of glasses, contacts or even get laser surgery to adjust the light perfectly. The modern style of glasses were first invented by Edward Scarlett in 1727. But don’t go around thinking that people with glasses are completely blind, because people with seeing problems can still see color, shape, and light but details are a little off. “Over the years eyesight has gotten worse,” said nurse Kim at Terra Linda Elementary. “Mostly because of video games.”