1. Paralysis of left external rectus, movement inwards of the affected eye associated with contracture of the orbicularis palpebrarum on the same side and marked retraction of the left globe;MacLebose;Tr. Ophth. Soc. U. Kingdom,1895
2. Abnormal associated movements of the eyelids;Sinclair;Ophth. Rev.,1895
3. Congenital paresis of both external recti muscles;Harlan;Tr. Am. Ophth. Soc.,1885
4. Congenital deficiency of abduction association with impairment of adduction, retraction movements, contraction of the palpebral fissure, and oblique movements of the eye;Duane;Arch. Ophth.,1905