Answer:
The correct answer will be- extrinsic eye muscle
Explanation:
Strabismus which refers to the misalignment of the eyes in which the brain does perceives the image of the two eyes differently at the same time leading to the double vision.
This condition is caused as a result of the external muscles of the eye which consists of seven muscle in which six muscle work to control the eye movement.
Thus, extrinsic eye muscle is the correct answer.