I would add that “until there is 100% certainty that having an image so close to your eyes all day will not harm your sight.” I am no anti-vaxxer or flat earth

I would add that “until there is 100% certainty that having an image so close to your eyes all day will not harm your sight.” I am no anti-vaxxer or flat earther, but old enough to remember that in the 50s the American Doctors vouched that cigarettes were good for your health, and later plastics were hailed as wonderful, and corn syrup was considered harmless, and eggs were both the devils food and a miracle food. So much money changing hands that I tend to trust very little certifications on health impact.