examination File size: 1.5MB
This video shows the basic technique
for examining a patient with nystagmus. The patient has bilateral pendular
nystagmus due to congenital macular scars possibly caused by toxoplasmosis.
(basic examination) File size: 2.8MB
Unless told otherwise begin with
a cover and alternate cover test for near and distant fixation. Examine
the eye in the nine cardinal positions of gaze. Do not forget to perform
horizontal and vertical saccades.
Special thanks to Miss D. Louis
FRACO for the demonstration.
Prism cover test (right esotropia)
File size: 3.4MB
This is a common request in part
II OSE. Before carrying out the test, perform the cover/uncover test and
alternate test to ascertain if the patient has eso- or exo- tropia or phoria.
The prism cover test is carried out with the apex pointing in the direction
of the tropia or phoria. Performed the prism cover tests for near (using
a fixation target) and distant. The end point of the test occurs when there
is no eye movement on alternate cover test. This patient has a right esotropia.
cover/uncover tests File size: 3.4MB
Three patients with abnormal cover/uncover
tests. First patient had had surgery for infantile esotropia which recurs.
The second patient has consecutive exotropia following surgery for esotropia;
cover test shows latent nystagmus. The third patient has a left sixth nerve
palsy, however; cover/uncover test in the primary shows a right esotropia
because the patient is fixating with her left eye.
palsy File size: 3.3MB
Fourth nerve palsy may present
as cover/uncover test or ocular motility examination. The patient in this
video has a right fourth nerve palsy and had had previous right eye surgery.
In the primary position, the eyes are orthophoric but not so on lateral
gaze and head tilt.
third nerve regeneration File size: 1.7MB
This patient who had had a left
third nerve palsy following road traffic accident develops aberrant regeneration
resulting in eyelid elevation during downgaze and adduction.
progressive external ophthalmoplegia File
Two patients with chronic progressive
external ophthalmoplegia showing bilateral ptosis and symmetrial ophthalmoplegia.