Bill Harvey: Shifting from tinted lenses

I have returned to the topic of light levels and their importance to ECPs in this column with a regularity that might be described as circadian.  

I recently saw a young patient who was complaining about her current specs. I was surprised to see that the specs had blue tinted lenses. She had been wearing them full time, but felt they were uncomfortable and not helping with her reading challenges.  

Whether or not the tint had been selected appropriately for her reading concerns, I was surprised to hear that no one had ever mentioned the evidence that a blue tint worn by a young patient for outdoors might not be a good idea, allowing potentially maculotoxic light to reach the retina.