Your eye is like a sink with a faucet that never stops running. When everything is working properly, vital fluids flow through the eye continuously and drain out at a balanced rate. Over time, however, your eye's drainage system can become clogged. In a sink, the fluid would simply overflow, but in your eye, there's nowhere for the fluid to go, and it “backs up.” This causes high eye pressure, also called high intraocular pressure (IOP).
High IOP can lead to glaucoma
Glaucoma can occur when pressure is exerted on the eye's sensitive optic nerve. This can damage the nerve fibers that transmit visual signals from your eye to your brain. Gradually, this damage can cause a loss of vision. That's why early detection and diagnosis is critical to controlling IOP and maintaining your vision.