Glaucoma is one of the leading causes of permanent vision loss. How does this eye condition occur? Imagine your eyes. In general, your eyes contain clear fluid that remains in a healthy or recommended range. The old fluid is drained out through your pupil while a new one is developed. This specific process is distorted when you develop glaucoma as it causes pressure to increase at harmful levels.
Glaucoma comes in two types, namely, the angle-closure and open-angle. The most common between these two is open-angle glaucoma which makes up 90% of all glaucoma cases. This percentage equates to 2.7 million people annually.