UV and macular degeneration
Your article "Hazards of Sunlight" offers some very useful tips for choosing sunglasses to protect our eyes from sunlight damage. However, your advice to rely on UV protection to reduce the risks of sunlight-related macular degeneration is not correct.
UV is not a factor in macular degeneration in the adult eye because it is filtered by the ocular lens and its ocular lens pigment (OLP) before it reaches the retina where the macula is located. Visible light does reach the retina, and among the wavelengths that the eye associates with color, it is the higher energy visible (violet and blue) that increase the risks of macular degeneration. Good sunglasses should eliminate all of the UV to reduce the risks of cataracts; but they should also reduce the levels of HEV (high energy visible) light - to reduce the risks of macular degeneration. Children are at particular risk from early damage to the retina because their lens does not yet have the age-related OLP. And seniors who have had a cataract operation are also at risk when the HEV-protecting OLP is removed along with their cataract lens – especially at a time when the anti-oxidant system located near their retina is compromised because of age.