Always been curious but how can you see through the head?

With this ine I have year duct vision so the little trangle spots under the eyes is were I see. This head has a very limited vision but im getting better with it each time I can now accully walk on my own with him.

Any relistic resin eye can no be seen though it always tearduct vision
As fo toony eyes eather the whole eye cant be seen though or only the puple with tonny eyes it really depends who make them for what you see though. Seen ssomm heads with tonny eyes and tear duct vision as well.