Introduction to Ocular Motility Extraocular Muscles EOM ...
Introduction to Ocular Motility Extraocular Muscles EOM ...
Introduction to Ocular Motility Extraocular Muscles EOM ...
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Hirschberg Corneal Light<br />
Reflex Test<br />
Estimate of deviation by observing<br />
symmetry of corneal light reflexes.<br />
Least accurate means of measurement.<br />
1 mm displacement = 15 <br />
Right Esotropia<br />
Light reflex is out because the eye<br />
is turned in.<br />
Right Hypertropia<br />
Light reflex is down, because the<br />
eye is up.<br />
Hirschberg estimate<br />
Corneal light reflex test<br />
Estimate of deviation<br />
based on amount of<br />
displacement of corneal<br />
light reflex.<br />
1 mm displacement =<br />
15 deviation<br />
30 ET<br />
60 ET<br />
90 ET<br />
Left Exotropia<br />
Light reflex is in, because the<br />
eye is turned out.<br />
Krimsky Prism Reflex<br />
Test<br />
Estimate of the deviation by aligning<br />
the corneal light reflexes with prisms.<br />
Light reflexes should be symmetrical,<br />
not necessarily centered.<br />
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