I have 1)dry eye and related bluriness sometimes lasting all day and 2) bluriness after eating high sugar or high carb foods. I’m 35. I have a dry eye routine but sometimes it’s still blurry. After one cup in the morning on a blurry day, I notice an immediate difference, and the next day, NO BLURINESS!!! It really kicks in fast! I’m so happy I can look forward to this tea on the blurry days. I think it also helps keep them moisturized! I say that because I don’t feel I need to use my heated eye mask as often when I drink this tea in the mornings! Which is great, since I can’t use the mask at work our out and about. Definitely recommend this to anyone with bad eyes, also, it may help prevent dry eye which I got from being a full time student and remote internship which took a took in my eyes. Really recommend it for extensive screen-time users, it may help stop the disease progression, wish I’d known about it sooner.