AK can go from no symptoms to significant risk to lose eyesight in less than 12 hours, and you can absolutely get it even when following suggested procedures.

AK can go from no symptoms to significant risk to lose eyesight in less than 12 hours, and you can absolutely get it even when following suggested procedures. A friend of mine got it just a month ago, and luckily he got it diagnosed correctly right away. He woke up in the morning with no issue, and by the evening he was in the emergency room. A quick diagnosis saved his eyesight despite the very aggressive onset, the fastest the doctor treating him had ever seen. Maybe AK is silently established in the eye sometimes, and an abrasion or some other factor allows it to take hold in the cornea? My friend was soldering with bad ventilation and he probably got plenty of microscopic resin particles in his eyes, which might have caused abrasions? His AK took hold right on the edge under the contacts.