[NSC] How much do you spend on SUNGLASSES ?

[dsr-burnley]

Won't be long and you'll no doubt be able to see people naked/deep faked real time with smart glasses, I saw Harvard students already made something with face recognition in them which can tell you strangers names, address, full bio just by looking at them. Rather scary really

Would be very useful for blind people. It doesn't even need to recognise strangers, just your own acquaintances. (Perhaps it's already being done?)

 

[dsr-burnley]

Question for opticians. Some of them say that we should wear sunglasses all day and every day to cut out ultraviolet light, because it will reduce the risk of having cataracts. But by how much does it reduce the chances, and is it worth it?

For one thing, cataracts seems to be pretty easy to put right. For another, it seems illogical to cut down the light reaching the retina now in hopes of avoiding a condition that will cut down the light reaching the retina.

But primarily, what are the numbers? I presume it's correct that a 75 year old who has worn sunglasses all his life has less chance of cataracts than one who never does. But what's the difference? What are the odds of each chap having cataracts? Sometimes these medical stats are made useless by lack of context, eg. the ones where they say eating such-and-such will double your risk of getting such-and-such disease; but when you look at the context, it means the chance goes from 1 in 2 million to 1 in 1 million and so can be ignored. What are the actual probabilities of getting cataracts in either case?

And if I do get cataracts, what are the chances of going blind?