What can you do at home if you get battery acid in eye?

Answer 1

Rinse with water for 15 minutes while holding your eye open. Then call your doctor.

Battery acid is sulphuric acid and concentrated sulphuric acid can dehydrate (in the chemical reaction sense) protein. This means that conc. H2SO4 can turn protein to carbon. However, battery acid is not that strong. While the concentrated acid is 97%, battery acid is about 33%. That is strong enough to burn and with prolonged exposure could damage your cornea. If it just went into the sclera, the white part, you should be OK. Apart from its corrosive nature, sulphuric acid is not very toxic, so once the burning has ceased you need not worry about poisoning.

The acid to be really careful with is glacial acetic acid. If it gets in the eye, it's instantaneous blindness and your only chance is that the eye is not too damaged to accept a corneal transplant. In 4% solution, acetic acid is vinegar. The point of this is to show that concentration of an acid makes a big difference to the degree of hazard.