They say the eyes are the windows to the soul, but they can also be a window into your health. Just as the measurement of blood pressure has clinical significance, measuring eye pressure is useful in evaluating overall eye health. An eye pressure test measures the fluid pressure inside the eye, and is a routine part of every comprehensive eye exam. Similar to having consistent high blood pressure, high eye pressure can have devastating effects. This can include damage to the optic nerve, and can eventually lead to glaucoma or permanent vision loss if it is not detected and treated properly.