Ophthalmic Disorders Relevant to Dentists

1. Ophthalmic Disorders Relevant to Dentists Prof.Amin Malaty Professor of Ophthalmology

2. Proptosis. • Uveitis. • Ocular trauma. • Intraocular tumours. • Cataract and Glaucoma

3. Proptosis

5. Proptosis • Forward protrusion of the eyeball from the bony orbit. • Diagnosis: Clinically recognized by observing the globes from above. • Confirmatory diagnosis by CT scan.

6. Causes of proptosis • Most common cause for unilateral and bilateral proptosis is “Thyroid eye disease”. • Other causes: Orbital infectious cellulitis. Inflammatory psuodotumour. Orbital tumours. Lacrimal gland tumours. Trauma.

7. Uveitis

9. Classification Anatomical Clinical. Aetiological. Pathological

10. Anatomical Classification Anterior. Intermediate. Posterior. Panuveitis.

19. Trauma

20. Anterior segment complications of blunt trauma Vossius ring Hyphaema Iridodialysis Sphincter tear Cataract Lens subluxation Angle recession Rupture of globe

28. Posterior segment complications of blunt trauma Choroidal rupture and haemorrhage Avulsion of vitreous base and retinal dialysis Commotio retinae Macular hole Optic neuropathy Equatorial tears

29. Episcleritis Superficial inflammation of the sclera

30. Intraocular Tumours

31. Intraocular Tumours • Primary or Secondary (metastatic) • In children the most common is Retinoblastoma. • In adults the most common primary malignancy is Malignant Melanoma

32. Retinoblastoma

33. Presentations of retinoblastoma • Leukocoria - 60% • Strabismus - 20% • Secondary glaucoma • Anterior segment invasion • Orbital invasion • Orbital inflammation

34. Malignant Melanoma

37. Glaucoma

38. Increase of the intraocular pressure above normal limits with affection of the visual fields and optic nerve head

40. Cataract

42. Development of an opacity in the lens