Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.


Direct ophthalmoscopy

practical approach to direct ophthalmoscopy for GPs

Mathys Labuschagne

on 1 March 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Direct ophthalmoscopy

Direct ophthalmoscopy
examiner side of instrument
How to perform ophthalmoscopy
Patient side of ophthalmoscope
Dr Mathys Labuschagne
Clinical Simulation Unit,
School of Medicine, UFS
Viewing aperture
Filter settings
Horizontal dial for light settings
Filter settings
Open filter
Polarising filter
Red-free filter
small spot
full spot
Cobalt blue filter
Fixation target
patient fixate at a distance
right eye examine right and left examine left
red reflex first
move closer,
hand on head, lifting upper eye lid,
hand of examiner touch the cheek of the patient
Fundus examination
magnification 15x
look for bifurcation
in blood vessels
Optic disc
Blood vessels
Cup/Disc ratio
Features of glaucomatous disc
Bayonetting of blood vessels
Cup to disc ratio of more than 0,4
Pale disc with nasally displaced blood vessels
Thin rim that does not comply with the ISNT rule
Peripapillary choroidal atrophy
To determine if a lesion is elevated or excavated.
Direct ophthalmoscope
What is the cup/disc ratio?
Brow rest or pad
Viewing aperture
Focussing dial for Rekoss disk
Window indicator of lens power
Retinal vascular changes associated with systemic arterial hypertension. Hypertensive chorioretinopathy may also accompany the acute phases of hypertensive retinopathy.
Hypertensive Retinopathy (HR)
Pathophysiology of HR
Red Reflex
Ophthalmoscope on +10.
Opacities in lens seen as dark areas in the pupil red reflex.
Bio-microscope gives precise anatomical position.
Diagnosis of cataract
Full transcript