Christmas tree cataract is seen in?
Diabetes
Atopic Dermatitis
Myotonic dystrophy
Rubella
Presenile cataract occurs in patients with atopic dermatitis (stellate opacities mostly posterior), myotonic dystrophy (christmas tree cataract) and GPUT & GK enzyme deficiency. Reference: A K Khurana, 5th Edition, Page 95