After cataract surgery on both eyes a few years ago, I am incredibly sensitive to sunlight. The darkest lenses from Specsavers are useless. I got the darkest glasses I could find on Amazon (not really bothered about what they look like by this time) and they're pretty good but I need darker still. I wondered if sunglasses people wear while skiing might be what I need, but I know nothing about brands to look out for. Can anyone point me in a direction that might help please?