Contact lenses for eyes are made of Perspex, which is nothing but_______________?
Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.
A. Polypropylene
B. Unsaturated polyester
D. Polystyrene
Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.