It is not the eye that are blind but the heart

Al-Quran - 22:46 

Surat Al-Ĥaj

أَفَلَمْ يَسِيرُوا فِي الْأَرْضِ فَتَكُونَ لَهُمْ قُلُوبٌ يَعْقِلُونَ بِهَا أَوْ آذَانٌ يَسْمَعُونَ بِهَا ۖ فَإِنَّهَا لَا تَعْمَى الْأَبْصَارُ وَلَٰكِن تَعْمَى الْقُلُوبُ الَّتِي فِي الصُّدُورِ

Afalam yaseeroo fee al-ardi fatakoonalahum quloobun yaAAqiloona biha aw athanunyasmaAAoona biha fa-innaha la taAAmaal-absaru walakin taAAma alquloobu allateefee assudoor

So have they not traveled through the earth and have hearts by which to reason and ears by which to hear? For indeed, it is not eyes that are blinded, but blinded are the hearts which are within the breasts.