From The Long Lost Friend:
A man from Germany informed me that to burn two sheets of white paper would produce about three drops of oil or water, which would heal all sores in or about the eye if rubbed with it. Any affection of the eyes can be cured in this way, as long as the apple of the eye is sound.
The grimoire The Long Lost Friend lists this spell.
Timeline of related events
1820Publication of Hohmann's Long Lost Friend (lists this spell)