According to search-discovered classical Islamic scholarship, the concept of 'blindness' (الأعمى) in the Quran is a profound, dual-layered theme. While it addresses physical blindness as a divine test requiring patience and affording legal accommodation, its primary emphasis is on the far more perilous state of spiritual 'heart-blindness' (عمى القلب). The pivotal verse, Surah Al-Hajj 22:46, definitively states, 'For indeed, it is not eyes that are blinded, but blinded are the hearts which are within the breasts.' Ibn Kathir's tafsir across numerous verses explains this as the inability to perceive divine signs and guidance, a direct consequence of arrogance and deliberate rejection of truth. Al-Qurtubi clarifies the distinct legal rulings for the physically blind, highlighting Islam's compassionate framework. The synthesis of 29 key verses reveals that while physical sight is a gift, spiritual insight is essential for salvation, and its absence—a self-imposed blindness—leads to misguidance in this life and severe consequences in the Hereafter.