1. Congenital hypothyroidism (cretinism)
2. CPD syndrome (chorioretinopathy and pituitary dysfunction)
3. Hunter syndrome [mucopolysaccharidosis (MPS II)]
4. Hurler syndrome (MPS I)
*5. Normal variation
6. Rubinstein-Taybi syndrome (broad thumbs syndrome)
7. Sanfilippo syndrome (MPS III)
Roy FH. Ocular syndromes and systemic diseases, 3rd ed. Philadelphia: Lippincott Williams & Wilkins, 2002.