I am going to take a guess based off of my earth science knowledge and say it is false. Sorry if I'm wrong.
Answer:
No, you would not go blind, even though the composition of emotional tears are different.
If the inner lining of the air sacs neither thin nor highly vascularized, then it can be inferred that AIR SACS ARE CANNOT BE THE SITES OF GASEOUS EXCHANGE BETWEEN AIR AND BLOOD. Air sacs are generally lined with mucus and surrounded with blood capillaries.
In case of birds, air sacs play an important role in respiratory system.
Brown tan or rusted colored
