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This 12-year-old boy has a small exotropia in the primary position.   Fixing with the right eye (occluder over the left eye) the exotropia is much larger than either the primary position deviation or when the patient is fixing with the left eye (occluder over the right eye).

1.	This is an example of:
	a. secondary deviation b. past pointing c. inhibitional palsy d.  aberrant regeneration
2.	The muscle behavior is under the influence of:
	a. mechanical factors b. neural factors c. abnormal convergence d.  synergistic divergence
3.	The ocular alignment is responding according to:
	a. Sherrington's law b. Bielschowsky's law c. Hering's law d.  none of the above

For answers to the above, click here on or after December 7, 2004.