Spiritual blindness versus physical sight

وَمِنْهُم مَّن يَنظُرُ إِلَيْكَ ۚ أَفَأَنتَ تَهْدِى ٱلْعُمْىَ وَلَوْ كَانُوا۟ لَا يُبْصِرُونَ

And among them are those who look at you. But can you guide the blind although they will not [attempt to] see?