As we get older and get cataracts we start to lose our ability to see blue light. Cataracts, especially the brownish nuclear sclerotic cataracts that are so common in aging, are nature's blue blockers! A small pilot study done in England has shown that removing cataracts and increasing the amount of blue light that reaches the retina boosts our brain function.
15 individuals with an average age of 75 had cataract surgery and then underwent a series of mental tasks that were both simple and complex. Aftert the surgery their reaction times were dramatically faster, regardless of their vision!
The more we study cataract surgery the more benefits we discover!