Did Isaac Newton poke his eye to see what the eye ball is made of?

Yes and no. Sir Isaac newton was a physicist and after his studies on gravity he began a study on lenses and optics. He wanted to determine why the human eye made such a sophisticated lens and how he could duplicate that. Which is why he took and ice pick and began to poke around under his eye. so yeah he did poke his eye but no not to see what is was made of.