Keratoconus is associated with all except –
Systemic conditions associated with keratoconus are a marfan syndrome, osteogenesis- imperfecta, EDS, Down's syndrome, MVP, atophy (asthma, eczema, atopic keratoconjunctivitis, hay fever).
Down's syndrome
Ehlers–Danlo's syndrome
Marfan's syndrome
Usher's syndrome