This is usually caused by an inability to drain fluid. This progressively damages the eye and pain, blurred vision and even blindness can result. Glaucoma may be chronic or acute. In the chronic form the progression is insidious and may result in tunnel vision. In many glaucoma patients there appears to be a problem with collagen synthesis and utilization.
Acute glaucoma is a medical emergency.
It is characterized by extreme pain, blurring of vision, reddening of the eyes, and a fixed and dilated pupil. It must be treated within 12 to 48 hours or blindness will result within 2 to 5 days. Prescription medications are appropriate for medical emergencies. Allergies also raise intraocular pressure and should be dealt with accordingly. MSM may be of particular help here.