The four stages of KC progression
Posted: Mon 05 Feb 2018 8:22 pm
Acknowledgement to John G for this
I get my lenses fitted in Switzerland (I work there) at the moment, and it's what my optometrist told me when he first fitted me. I assumed it was an international classification, but it seems it's restricted to German-speaking countries, so apologies if I've confused anyone!
There are four stages under this system, and as luck would have it, it's already been reproduced in English on Wikipedia!
https://en.wikipedia.org/wiki/Keratoconus
and scroll down to stages. In practical terms (i.e. ones I can understand!), it means that the KC in the stage 1-2 eye is quite mild, while the stage 3 eye is more advanced.