<prompt> Blue sclera is seen in -AlkaptonuriaOsteogenesis imperfectDown syndromeKawasaki syndrome  <response>: Ans. is b i.e., Osteogenesis imperfect Blue scleral discoloration is caused by thinning or transparency with resultant visualization of the underlying uvea. Causes of blue sclera are: Osteogenesis imperfecta, Marfan syndrome, Ehler - Danlos syndrome, Pseudoxanthoma elasticum. 