See also
North American blastomycosis

References


== External links ==
A person with an intermittent right esotropia has a right eye that occasionally drifts toward the persons nose, but at other times is able to align with the gaze of the left eye. A person with a mild exophoria can maintain fusion during normal circumstances, but when the system is disrupted, the relaxed posture of the eyes is slightly divergent. Other considerations
Strabismus can be further classified as follows:

Paretic strabismus is due to paralysis of one or several extraocular muscles. Nonparetic strabismus is not due to paralysis of extraocular muscles. Comitant (or concomitant) strabismus is a deviation that is the same magnitude regardless of gaze position. Noncomitant (or incomitant) strabismus has a magnitude that varies as the person shifts his or her gaze up, down, or to the sides.Nonparetic strabismus is generally concomitant. Most types of infant and childhood strabismus are comitant. Paretic strabismus can be either comitant or noncomitant. Incomitant strabismus is almost always caused by a limitation of ocular rotations that is due to a restriction of extraocular eye movement (ocular restriction) or due to extraocular muscle paresis. Incomitant strabismus cannot be fully corrected by prism glasses, because the eyes would require different degrees of prismatic correction dependent on the direction of the gaze. Incomitant strabismus of the eso- or exo-type are classified as "alphabet patterns": they are denoted as A- or V- or more rarely λ-, Y- or X-pattern depending on the extent of convergence or divergence when the gaze moves upward or downward.