"It is not eyes that are blinded, but blinded are the hearts which are within the breasts." [22:46]
فإنها لا تعمى الأبصار ولكن تعمى القلوب التي في الصدور
It is the heart that goes blind, not our eyes. Just look around you, you'll see people brought up in Muslim countries yet they can't even pray or fast Ramadan. They can make-out the mosques and the time for Iftar but they can't see the pleasure in practicing it. You'll see mothers who adore their children, careful of their happiness and worrisome of their pain, but they can't see the difference between the innate love and true love. True love means to help guide their children to Allah. You'll come across people who are well aware of the evil consequences of having bad companions and yet, they're eager to spend countless hours partying with them. Yes, they can certainly make out the righteous from the unrighteous, but they've blinded of good judgment.
Be grateful if your heart can see.