The eye is also immune privileged [1], so whatever you do get in there is bound to spread extremely fast. So maybe the idea is being able to feel that earlier?
Contact lenses are pretty much an impossible proposition. We can't get healthcare professionals to always correctly sanitize their hands, what chance do contact lens users (many of them teenagers) have of only handling their lenses and eye after sanitizing their hands, always sanitizing the lenses themselves in the proper, new solution and changing them on the right timescale?
And if you fail at any of these steps and get an infection, you are pretty much not going to come out of it without permanent damage of some sorts. You basically need to immediately get to an ophthalmologist and apply the proper eye drops, because even after a day you could have enough scarring to partially lose vision or increase sensitivity to light.
Contact lenses are pretty much an impossible proposition. We can't get healthcare professionals to always correctly sanitize their hands, what chance do contact lens users (many of them teenagers) have of only handling their lenses and eye after sanitizing their hands, always sanitizing the lenses themselves in the proper, new solution and changing them on the right timescale?
And if you fail at any of these steps and get an infection, you are pretty much not going to come out of it without permanent damage of some sorts. You basically need to immediately get to an ophthalmologist and apply the proper eye drops, because even after a day you could have enough scarring to partially lose vision or increase sensitivity to light.
1: https://en.wikipedia.org/wiki/Immune_privilege#Immunological...