Khol is what they called it in Egypt.Originally it was made with fine oil,lampblack and galena.Galena is a rock metallic and black it has lead in it.The lead in the galena eventhough it's a bad idea to smear lead on your face,it served a purpose,it kept the Egyptians eyes free of infections,bugs and like a football player puts those dark lines on his cheeks,the khol also took away glare so the person could see in the sunny desert.
Egyptian mothers would apply kohl to the eyes of babies soon after they were born believing its application would strengthen the child's eyes and preventing the child from being cursed by an "evil eye.
And..
The sun god, Re (a form of Atum),
ruled over the earth,
where humans and divine beings coexisted.
Humans were created from the Eye of Re or wedjat
(eye of wholeness).
This happened when the eye separated from Re and failed
to return.The gold eye,Solar..Right eye.
Shu and Tefnut tried to make the eye come back but the eye didn't want to go back. In the ensuing struggle, the eye shed tears from which humans were born.
The eye or Utchat also represents the power to see, to illuminate and to act. The act of bringing the eye back to the creator
was equivalent to healing the earth — the restoration of right and order.
The word utchat, sometimes spelled udjat, refers to Egypt's sacred eye symbol. The right eye is called the Eye of Ra, symbolizing the sun. The left is called the Eye of Thoth, symbolizing the moon. Both eyes together are the Two Eyes Of Horus The Elder. The eye is the part of the body able to perceive light, and is therefore the symbol for spiritual ability.
http://www.shira.net/symbols.htmVery interesting since the guy you helped was blind.And he aged before your eyes,for Horus with both eyes is the ELDER Horus.
And since the shawl was silver,Ra's other eye,the left is the moon,silver.it is the eye of Thoth.
And a silver Tallit has an interesting moon connection.
http://www.tallit-for-woman.com/products.asp?partNo=01-017The Hebrew word khol has two meanings. Many translations
say sand but it can also be translated phoenix bird. In this corrected translation
it is indicating resurrection hope.
Or The Bennu bird,and the ben ben stone.