How many people have keratoconus?

This is an interesting article published by the National Keratoconus Foundation in America:

For many years, it’s been long stated that keratoconus occurs in one person in every 2,000. In an article published in March 2017, the American Journal of Ophthalmology, Dr. Daniel Godefrooij, from the University of Utrecht, refines our understanding of incidence and prevalence of KC(2).

The analysis that KC occurs in 1 in every 2,000 people was derived from a patient registry that was initiated in part by NKCF, over the span of fifty years from the 1930s to the 1980s. Some early supporters of NKCF likely participated in the voluntary survey.  Read More…