فَإِنَّهَا لَا تَعْمَى الْأَبْصَارُ وَلَٰكِن تَعْمَى الْقُلُوبُ الَّتِي فِي الصُّدُورِ
{ For surely it is not the eyes that are blind but the hearts }
The Quran 22:46

because the blindness of the eyes along with the heart is not harmful, Allah uses this metaphor in contrast to the opposite. For one who's eyes are blind can reflect and benefit from the heart. Indeed, it is not the sight that becomes blind but the heart that becomes blind.
God knows best.