<prompt> Blue sclera is seen in all exceptkeratoconusMarfans syndromeOsteogenesis imperctaEhler Danlos syndrome  <response>: In keratoconus, there are no scleral changes. Blue sclerae are characteristic of connective tissue disorders like osteogenesis imperfecta, Marfans syndrome, Ehlers-Danlos syndrome. Ref: Maheshwari 6e pg 316. 