Ophthalmology Videos II ..

11. Marcus-Gunn's jaw-winking ptosis  236KB ( This baby has a right ptosis. The jaw-winking  was 
        brought out by her suckling the bottle)

12. Right Duane's Syndrome  937KB ( The patient has an abnormal head posture with head turn to the 
        right.Eye movement shows limited right abduction and narrowing of the palpebral fissure on adduction.
        He has a right Type I Duane's syndrome.)

13. Bilateral Duane's Syndrome  716KB ( The patient has an abnormal head posture with chin 
        depression. Eye movement reveals bilateral limited abduction with narrowing of the palpebral fissure on 
        adduction. Bilateral up-shooting of the eyes on adduction are seen being more marked on the left than 
        right. He has bilateral Type 1 Duane's Syndrome.)

14. Thyroid eye disease..808KB ( The patient has a right proptosis and hypotropia secondary to thyroid 
         eye disease. Eye movement shows poor elevation of the right eye and lid lag on downgaze.)

15. Pendular nystagmus   997KB ( This baby suffers from oculocutaneous albinism. The video shows 
        pendular nystagmus in the primary position.)

16. Periodic alternating nystagmus  2,482KB ( The patient has periodic alternating nystagmus. The 
        video shows the presence of jerky nystagmus in the primary position; the fast component is initially 
        to the left, followed by a short rest period of about 5 seconds, then slowly the eyes develops 
        jerky nystagmus with the fast component to the right. The cycle is then repeated with a rest period and 
        then jerky nystagmus to the left. This type of nystagmus may be congenital or secondary to cerebellar 
        disease such as CVA or multiple sclerosis.)

17. Parinaud's syndrome  730KB  ( The video shows failure of the pupils to respond to light but on 
       attempted convergence, which is incomplete because the patient has  paresis of convergence, the pupils 
       constrict. The eyes show convergence retraction nystagmus best seen with a down-going opticokinetic 

18. See-saw nystagmus  755KB ( This patient has see-saw nystagmus characterised by supraduction and
        intortion of one eye, and infraduction and excyclotortion of the other. This coniditon is seen in
        suprasellar lesion and bitemporal hemianopia is common.)

19. Upbeat nystagmus 1,463KB (This patient has an upbeat nystagmus in the primary position and a right
        skew devation (the right eye shows a vertical deviation as well as being exotropic). This type of 
        nystagmus  is seen in patient with a brainstem lesion such as multiple sclerosis. The exact location is 

20. Downbeat nystagmus   782KB (The presence of downbeat nystagmus suggests a lesion in the 
        cervicomedullary junction. Causes include Arnold-Chiari's syndrome, spinocerebellar degeneration, stroke
        and multiple sclerosis.)

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