Practice: Blue-light blockers are your friend
For that reason, there is also a practical solution: All eyeglasses, even reading or computer glasses used specifically when staring at computer screens, should have a blue-light blocker embedded within the lenses. This is not a film that is applied to the lenses but an actual polymer consisting of a yellow chromophore pigment that blocks that harmful blue light. Nevertheless, it allows all colors of the spectrum to come through. Yellow photochromatic lenses are even available for implant in cataract surgery in the form of ReSTOR lenses (Alcon Laboratories).
It turns out that grandma was right: UV rays are harmful, and now blue light has been added to the club. Macular degeneration has no cure and is increasing in prevalence, so it is incumbent upon the ophthalmic profession to advise patients on how to protect one of their most precious assets —their vision.