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Diagnosis of paralytic strabismus is almost equal to the diagnosis of isolated or combined ocular motor nerve palsies (oculomotor nerve palsy, trochlear nerve palsy, or abducens nerve palsy) InExotropia is most often intermittent and idiopathic Less often, exotropia is constant and paralytic, as with infantile exotropia or 3rd (oculomotor) cranial nerve palsy Third Cranial (Oculomotor) Nerve Disorders Third cranial nerve disorders can impair ocular motility, pupillary function, or both Symptoms and signs include diplopia, ptosis(exotropia) or downward — while the other eye is directed straight ahead Strabismus can also be described by its cause The 3 cranial nerves pigmenti syndrome, Noonan syndrome, Prader(III, IV, VI) responsible for eye movement can be weak or paralyzed and cause strabismus Some examples of paralytic strabismus include third nerve Squint Dr Abdulrhman Alsagaihi Ppt Download Causes of paralytic exotropia