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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Angle Kappa<br />
Heterotropia (Tropia)<br />
Deviation of an eye<br />
which is present under<br />
normal visual<br />
situations.<br />
A “Manifest”<br />
deviation<br />
Not necessarily visible<br />
<strong>to</strong> casual observation.<br />
Heterophoria (Phoria)<br />
Latent tendency for the eyes <strong>to</strong><br />
deviate, which is controlled by fusion.<br />
f<br />
X<br />
f<br />
f<br />
X<br />
X<br />
f<br />
X<br />
f<br />
Eccentric Fixation<br />
Dragged Macula<br />
Heterotropia<br />
Not always apparent <strong>to</strong> casual observation.<br />
Intermittent deviation<br />
A deviation which is sometimes a phoria<br />
and sometimes a tropia.<br />
May vary with position of gaze, distance<br />
from the patient, or fatigue.<br />
6
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