Larry Birkhead denies that Anna Nicole Smith's drug taking endangered their daughter's eyesight.

ET:
Is ANNA NICOLE SMITH's little girl losing her sight? Only ET has the truth behind why LARRY BIRKHEAD and Anna's baby is wearing an eyepatch!
"She has strabismus, which is a turning in of one of her eyes, and it's something that we've been looking out for for a while," Larry tells our own MARK STEINES in an exclusive interview. "I've been taking her to the doctors and ... Anna had taken Dannielynn to the doctor [in the Bahamas] to see about it when she was just a few months old."..........And Larry staunchly defends any suggestion in the tabloids and on Web blogs that Dannielynn's condition has anything to do with methadone or any medications Anna may have taken during her pregnancy.
"All of the opinions that I had [from doctors], every one of them said that it's very, very unlikely, because no one knows one-hundred percent what causes [strabismus]," says Larry. "But I point-blank ask every single doctor, 'Could any medications that Anna was on have caused this?' and they said that it's more likely that a genetic reason could have caused it."