He cursed his night blindness, then told himself that the darkness was his only hope.
For most of the children, two vitamin A tablets every six months will prevent night blindness.
"No flash," said one of the Seals, apparently worried about night blindness, after the photographer took a picture.
Deficiencies can lead to night blindness and serious illness.
People with night blindness have poor vision in the darkness, but see normally when adequate light is present.
In childhood, night blindness is the most common first symptom.
They didn't go completely blind, but got sort of night blindness.
Possibly a lack of vitamin A led to night blindness, which then grew worse.
Taken over time, fenretinide may cause night blindness and skin disorders.
Low levels of vitamin A may cause vision problems (such as night blindness) and permanent eye damage.