This sounds kinda like The Unwanteds by Lisa McMann. (It's a YA series.)
What I remember the most is the magic system, it's about a young man and he builds metal animals with lots of glyphs and stuff he has to write on them and some precious stones for eyes and other parts.
The whole premise of the book is that kids who have "imagination" are deemed unwanted. They would be thrown into a pit of boiling something-or-other except there's a mage who (secretly) saves them and brings them into a magical world that he created, and everything in that world is created by arts and imagination. For example, one of the main non-human characters is Simber, a giant winged cheetah.
The cheetah was crafted out of sand with preserve spells and things, but the main character also builds creatures later in the series, like a whale which he makes with seaweed, a whale skeleton, and a diamond encrusted horn.
He gives them certain senses like sight, hearing and he can see through them and control them.
The animals created by magic have life unless the head mage of Artime dies
which actually happens in the second book, so the main character must take over as head mage.
So they can certainly see and hear. I couldn't find a reference for the "seeing through their eyes" bit.
I distinctly remember a battle where the guy is running to safety behind a town wall and he has 2 dogs and 1 flying thing. The flying thing can drop orbs that explode. He's trying to make sure all the towns folk make it to safety and has to make a big show of it.
The main character had two cats, one in Quill (the non-mage world) as a spy and one in Artime for the Quill-cat to communicate with. The flying thing is probably Simber.
Also remember he wrote on paper as well to create small spies.
I read the books a while ago and remember something similar to this, but I can't actually find a source for this and I don't remember the specific circumstances.
See the front covers of the books below (Simber is the giant winged creature on the cover of the first book):