1. Cyclic strabismus

            A. Associated with frontoorbital fibrous dysplasia

            B. Associated with Gravesdisease

            C. Associated with optic atrophy

            D. Cyclic superior oblique palsy

            E. Cyclic third nerve palsy

            F. Esotropia, vertical

                        (1) Comitant

                        (2) Noncomitant

2. Cyclic vertical deviation

3. Diabetic nerve palsies

4. Myasthenia gravis

5. Oculogyric crisis (see p. 152)

6. Periodic alternating gaze deviation

7. Periodic alternating nystagmus

8. Periodic vertical nystagmus

            A. Associated with potassium abnormality

            B. Familial

9. Petit mal epilepsy

            A. Exotropia

            B. Upward deviation

10. Ping-pong gaze

11. Recurrent sixth nerve paralysis in children (see p. 169)

12. Spasmus nutans

13. Twitch of lids (orbicularis)

Hamed L. Cyclic periodic disorders in diagnostic problems in clinical ophthalmology. Margo CL, ed. Philadelphia: WB Saunders, 1994.

Hoyt WF, Keane JR. Superior oblique myokymia. Arch Ophthalmol 1970; 84:461-467.

WindsorCE, Berg EF. Circadian heterotropia. Am J Ophthalmol 1969; 67:565-571.