Cataracts are the clouding of the lens in a dog’s eye. This clouding causes blurred vision and sometimes blindness. They’re a common problem for older dogs, though younger dogs can be affected as well.

The best way to treat cataracts is to get them removed surgically. The surgery is quick and relatively painless for the dog, but it does have its risks—the most common complications are inflammation of the cornea (the part of the eye that lets light in) and glaucoma (increased pressure inside the eye). It’s also not uncommon for some dogs to develop dry eye after surgery.