direct ophthalmoscope NMU.pptx

direct ophthalmoscope
fundoscopy course
fundus examination
medical students
ophthalmology
faculty of medicine
kafrelsheikh university
new mansoura university
delta university

1. Mohamed Ahmed ELShafie Lecturer of ophthalmology Harvard Medical School Almuni Director of Training Unit 01069201269

2. Viewing Optic Nerve Head Observe: Size: 1.5 mm Shape: round to oval Color: red-yellow Margins: sharp C/D ratio: horiz & Vert

3. Papilledema Indicates increased intracranial pressure due to: hydrocephalus, brain tumor or acute intracranial hemorrhage

4. Optic disc cupping

5. Vascular Occlusion

6. Methods of Fundus Examination

7. Fundus Biomicroscopy

8. Indirect Ophthalmoscopy

9. Direct Ophthalmoscopy

10. Advantages Portable Easy to use Upright image Magnification  15x Can use w/o dilation Disadvantages Small field of view Lack of stereopsis Media opacities degrade image

11. Direct Ophthalmoscope

12. Preparation of ophthalmoscope

13. Red reflex

14. Look for media opacities Cataracts Corneal scars Large floaters

15. Basic skills Introduce yourself to the patient. Explain the procedure & take the patient permission. Sterilization of the hands. put mydriatic eye drops to dilate pupils. Ask to darken the room. Turn on ophthalmoscope, Adjust the focus & Adjust light aperture to large sized pupil. Use right eye & right hand for patient’s right eye. Direct Ophthalmoscopy

16. Why do we dilate pupils?

17. Basic skills Introduce yourself to the patient. Explain the procedure & take the patient permission. Sterilization of the hands. put mydriatic eye drops to dilate pupils. Ask to darken the room. Turn on ophthalmoscope, Adjust the focus & Adjust light aperture to large sized pupil. Use right eye & right hand for patient’s right eye. Direct Ophthalmoscopy

18. Direct Ophthalmoscopy technique:

19. Proper position for peripheral fundus viewing

20. Contraindications : head injury requiring monitoring

21. Preparation of patient

22. Examine Fundus