Super Dark Sunglasses are great for those with sensitive eyes. These sunglasses have super dark lenses which block 100% harmful UVA & UVB rays. The difference between normal charcoal lenses and dark charcoal lenses is the filter the lenses offer. Normal charcoal lenses will block 100% UVA & UVB rays. Super Dark lenses block 100% harmful UVA & UVB rays with a heavy filter which blocks more bright light than the normal charcoal lens. If you find yourself getting headaches from eye strain when out in the sun for too long and you are wearing normal sunglasses with normal charcoal lenses you may want to try a pair of these sunglasses. They will reduce the eye strain and more than likely stop the headaches. Sources: http://www.superflysunglasses.com/superdarksunglasses
People who have sensitive eyes should wear dark sunglasses to block the strong light when they are in bright light condition. Super dark sunglasses are good for sensitive eyes because the lenses are dark enough that others can not see your eyes. So if you wear super dark sunglasses, almost all the bright light will be darkened and then your eyes won't be sensitive to them any longer. You can see any thing comfortably with the super dark sunglasses on.
When it comes to sensitive eyes, complete UV protection and visible light filtering is a must. The best protective sunglasses for sensitive eyes block sunlight, indirect light, wind, moisture and allergens from getting inside the sunglasses and irritating sensitive eyes. So if your eyes are so sensitive, you might want to look for polarized lenses, which cut reflected glare or sunlight that bounces off smooth surface like pavement or water. Photochromic lenses is also another better choice, because they automatically darkens the lenses as surrounding light gets brighter. Besides, wraparound style sunglasses is another choice, since they block light from all angles as well as any elements like wind, rain, pollen and so son. Hope this helpful.