Keratoconus is a potentially sight-threatening condition in which the cornea distorts and becomes fragile, and without treatment can lead to severe visual impairment. The condition is much more common in people with Down’s syndrome and likely to be more common in people with other types of learning disability. Since the advent of a new treatment, corneal cross-linkage, which is only applicable in the early stages of the condition, early diagnosis has become imperative.
