HUMAWORM is strong enough to kill parasites, their larvae and eggs, yet it is formulated to be gentle on the body at the same time. Eyebright is an herb - it can be taken internally as a tea - as a powdered capsule - or in an alcohol based tincture.
Tinctures are herbs that are "boiled down" if you will in an alcohol base so that the medicinal component in the herb itself is greatly concentrated - a few drops of a tincture can equal several capsules worth of the same herb. Tinctures are usually taken either straight or mixed in water. But the tincture needed to put in his eyes will have to be alcohol free - if not, it will damage his eyes. It has to be specially prepared either without the alcohol OR distilled to take the alcohol out in order to be used as eyedrops.