Jesus Healing Blind Man

In today's lectionary reading, Jesus heals the blind man who then reports that he sees people like trees walking. Mk 8:24. I have absolutely no doubt that Jesus healed the blind. However, this particular healing has always posed a problem for me. Having never seen a tree, would someone with recently restored sight know what a tree looked like? I don't know.

Anyway, I looked up the Greek word for blind and although mostly translated as a blind person, the word can also mean "smokey". If in this one case, I opt for "smokey", then I have no problem. The suggestion is that perhaps he had not always been blind.