Keratoconus occurs in adolescence at around 14 years of age, although the onset in childhood is not uncommon. Usually, it initially affects only one eye and after a few years, it spreads to the other. Forms of keratoconus that affect only one eye are very rare. The evolution is quite variable and unpredictable, it can spontaneously slow down, but it never stops entirely. Unfortunately, it is not considered a rare disease as we have one new case per 500 persons per year when considering topographic forms of the disease, with a slight preponderance of male subjects. — Visit: www.keratoconuscenter.eu/what-is-keratoconus — @keratoconuscentereurope — #keratoconuscentereurope #keratoconus #adolescence #enzyme #cornea #cornealtissue #contactlenses #eye #disease #europe A post shared by Keratoconus Center Europe (@keratoconuscentereurope) on May 7, 2017 at 5:06am PDT