What hypotheses about human vision were expressed by ancient Greek philosophers?

Pythagoras believed that an open eye emits special “fluids” and feels the observed objects with them. Ancient Greek atomists believed that shells similar to the objects themselves are continuously torn off from each object.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.