Um Sayala wrote:Now there is another family exactly opposite this one.
They can see mchana but are blind as soon as the son goes down. Wah ....God help them
Aha, that's nyctalopia, or what we commonly know as night blindness. Commonly caused by malnutrition (lack of vitamin A) but may also be congenital (retinitis pigmentosa), due to injury or caused by some medications.
As with hemeralopia, management/treatment of night blindness will, too, depend on the cause.
Life is like playing a violin solo in public and learning the instrument as one goes on.