Comment by _5659

edit: I deleted most of my comment. I don't think it added anything substantial to the conversation.

I will point out that this seems like plagiarism.

"...the retina is actually an extension of the brain, formed embryonically from neural tissue and connected to the brain by the optic nerve."

From: https://www.britannica.com/science/retina

"...The retina is actually an extension of the brain, formed embryonically from neural tissue and connected to the brain proper by the optic nerve."