II. Definitions
- Hypertelorism
- Excessive Orbital Separation (increased space between the eyes)
- Results from overdeveloped sphenoid lesser wings
- Hypotelorism
- Decreased oribtal separation (decreased space between the eyes)
III. Causes: Hypertelorism (increased spacing between the eyes) examples
- Apert syndrome
- Trisomy 18 (Edwards Syndrome)
- Basal Cell Nevus Syndrome
- DiGeorge Syndrome
- Neurofibromatosis 1
- Noonan Syndrome
- Zellweger Syndrome
- Pierre Robin syndrome