Keratoconus

Keratoconus is indexed under Sensory, Ophthalmologic.

US prevalence

~1 in 375-2,000 (~200,000-800,000) Source: NKCF; AAO. This figure comes from a professional society, registry, or study rather than a federal source. Label: REPORTED.

ICD-10-CM codes

H18.6

Typical onset

Onset puberty/early adulthood; progresses until 30s-40s

Course

progressive

Body systems

ophthalmologic

Sex differences

Roughly equal or slight male predominance

Racial and ethnic differences

Higher in South Asian and Middle Eastern populations

What this page does not establish

These figures describe populations, not individuals, and none of them is a diagnosis or a treatment recommendation. Prevalence estimates are approximate and reflect published ranges. Disparity figures are reported patterns, not causes.

Taxonomy last reviewed 2026-05-19. Each figure on the interactive page carries its own source and retrieval date, which can be later than this review.

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