Original: The eye spots that are present at the tip of the tentacles or instead at the base of the tentacles range from simple ocelli that can not project an image ( simply distinguishing light and dark ) , to more complex pit and even lens eyes .
Simplified: The eyes that may be present at the tip of the tentacles range from simple ocelli that can not project an image ( simply distinguishing light and dark ) , to more complex pit and even lens eyes .