Good on you for posting, yes indeed it is funny and then we find out that Chris not only is an astronaut but also a Space Cadet!!
View: https://www.youtube.com/watch?v=KaOC9danxNo
Until there is evidence of proof of "no ISS" we can rightfully accept that there is one, All due respect to you but as with science we must go with the evidence presented as is endorsed by all the international participants.
See, it's not one or the other, it's various - Of course they wouldn't be smoking weed, agreed, however they would safely grind it up and add to their yogurt or other oral solution

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Quite right they wouldn't send up astronauts with glaucoma but . . . If their astronauts were to develop such symptoms on-board then they would have appropriate medicine at hand in the first aid box.
Apparently the eyes suffer in space, but it also appears they're keeping an eye on it
View: https://www.youtube.com/watch?v=IKVjUCN0YPw