If you have high intraocular pressure, or eye pressure, you may have glaucoma, which is one of the most common eye disorders seen in ophthalmology practices. There are two types of glaucoma. The most common is open-angle glaucoma, and while it causes elevated eye pressure and peripheral vision problems, it usually doesn't cause any other symptoms. Conversely, closed-angle glaucoma, also known as acute-angle glaucoma can cause severe eye pain, redness, headache, nausea, and vomiting.