The Eye Problems Increased Eye Pressure Can Cause Well the pressure of the eye, if it goes too high can damage nerve tissue. At the back of the eye we have an optic nerve, has over a million receptors and if the pressure is elevated, it will start to damage the nerve receptors. That is a condition called glaucoma, but monitoring the pressure, if you have high pressure doesn’t mean you are going to have glaucoma, but it puts you at risk and so there is a range of normals of pressure of the eye. It can range anywhere from lows -- 8 and 9 is a low pressure and anything above 21 we start to suspect glaucoma.