Mud

Muh has a healing properties of zinc and selenium that good for the eyes:

In John 9:6-7 “After saying this, he spit on the ground, made some mud with the saliva, and put it on the man’s eyes.“Go,” he told him, “wash in the Pool of Siloam” (this word means “Sent”). So the man went and washed, and came home seeing.”

The Important minerals for your eyes include zinc and selenium. The selenium and zinc ilare good for your eyes. Zinc helps your body absorb vitamin A and also helps many antioxidant enzymes in your body reduce the number of free radicals.

The amount of zinc present in the soil depends on the parent materials of that soil. Selenium is located in mineral deposits and some soil formations where a high concentration of sulfur is found.