Assertion: strabismus's effect | /r/HasProperty | measured as the change
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Source sentences:
text: The effects of the botulinum toxin treatment were measured as the change in the strabismus angle in relation to the pre injection value, presence of diplopia in primary gaze, relation between duration of presentation and the reduction in deviation, relation between aetiology of paralytic strabismus and reduction in deviation, the extent of recovery of movement and the results were statistically analyzed.