Cataracts can cause or worsen glaucoma.
The most common type of cataract is caused by the build-up of protein deposits on the natural crystalline lens in your eye. As these layers build, they cause the lens to grow larger, harden, and cloud your vision. If the fluid- exchange system in your eye is compromised, as happens with glaucoma, this cataractous lens can further increase eye pressure.
You might actually experience a reduction in eye pressure, or an ability to change your drop treatment regimen, after cataract surgery. Talk with your doctor, and explore the link between cataracts and glaucoma.