If a cat's nasolacrimal duct is blocked, you can go to a pet hospital for unblocking surgery. You can usually use eye drops at home to wipe the eyes around the eyes to relieve it. You can also massage the cat's eye-nose joint to help clear it, and control salt intake in the diet. Improve the condition of cat’s eyes with tears. So far, there is no way to completely cure the blocked nasolacrimal duct in cats. Even if unblocking surgery is performed, there is a chance of blockage again.