Relation between teeth and diseases of eye

Relation between teeth and diseases of eye
for dentists and students

1. The Relation Of Teeth To Diseases Of The Eye By/ Mohamed ElShafie Lecturer of ophthalmology KafrELShiekh University

2. Examination Visual Acuity (VA)

3. Normal visual response Age Visual response Newborn Light perception 1 month Fixates and follows interesting bright coloured objects 3 -4 months Binocular vision 6 months Reach objects using vision 9 months Search for toys 2 years Picture matching

4. FIXATION TARGETS (fix and follow) : If appropriate targets are used, this reflex can be demonstrated by about 6 wk of age. Binocular fixation preference :

5. OPTICOKINETIC NYSTAGMUS : Evaluation of the presence or absence of opticokinetic nystagmus was the first “technologic” approach to acuity measurement in preverbal children.

6. Visual Acuity Rules It is a test for central vision only Start with one eye (uniocular) Good illuminated chart with higher contrast

7. Visual Acuity Interpretation UCVA BCVA 6/6 20/20 1.00 6/6 6/9 6/12 6/18 6/60 5/60 1/60

8. Near vision chart

9. REFRACTIVE ERRORS

10. Myopia Nearsightedness See well up close but blurry in distance Eye is too long Light focuses in front of retina

11. Hyperopia Farsightedness See well in distance Eye is too short Focus point is behind retina

12. Visual Acuity Pin Hole test To differentiate refractive errors from organic diseases by blocking peripheral rayes

13. vEDIO

14. Ishihara plate to test color vision (Red-green defective vision)

15. Amsler grid to assess macula..

16. Common causes of dropped vision:

17. Cataract

18. Endophthalmitis

19. Glaucoma Progressive loss of Nerve fiber layer at ONH (increased cupping) Can lead to peripheral visual field loss Sometimes caused by elevated intraocular pressure

20. Diabetic Retinopathy Diabetes affects retinal micro-vasculature One of leading causes of blindness among ages 20-64

21. Macular Degeneration #1 cause of blindness in Americans over age 65 Theorized link to UV light exposure subsequent release of free radicals oxidation within retinal tissues

22. Retinal Detachment Flashing lights in peripheral vision New floaters—black spots or ‘cobwebs’ Peripheral scotoma—dark shadow or “curtain” blocking vision

23. Common causes of red eye:

24. Conditions of common interest:

25. Marcus gunn jaw winking

26. Jaw pain

27. Giant cell arteritis

28. Trigeminal neuralgia

29. Behcet disease

30. Sjogren syndrome

31. Dental anathesia

32. aspiration before injection slow injection of small quantities moving the needle during injection to avoid injecting a large bolus of epinephrine in one location.

33. Dental surgery

34. Exposure to Blood

35. Wash needle sticks and cuts with soap and water Flush splashes to the nose, mouth, or skin with water Irrigate eyes with clean water, saline, or sterile irrigants What should I do if I am exposed to the blood of a patient?

36. Working Together Together we can catch vision threatening conditions earlier Glad to answer questions Always happy to take your calls