I’d like to add another factor in here, if I may. I spent many years in prescription contact lens manufacturing as an optical technician , for a world leading and pioneering optics company,in the days when specialist lenses were hand made. My wife still works in the dispensing field of spectacles. The amount of people that I’ve witnessed first-hand who’s vision was badly impaired through poor correction/ damaged-dirty lenses etc , and who were actually unaware of it, would(should) frighten you all. So when someone says ‘Sorry, I didn’t see you!’ , it may be true.
Steve