Eye Disturbances

Question 1

What is convergent strabismus and what is another name for it?

Answer 1

convergent strabismus - - one or both eyes turn inward toward the nose. prevents a person from directing both eyes simultaneously towards the same fixation point; the eyes do not properly align with each other. a.k.a esotropia

Question 2

What is the term for a vertical misalignment of the visual axes?

Answer 2

Skew deviation

Question 3

Where do saccadic commands originate?

Answer 3

Saccadic commands originate from burst neurons of the pontine and medullary reticular formation.

Question 4

What do saccades do?

Answer 4

Voluntary (intentional or volitional) saccades carry the eyes to a predetermined location corresponding to the position of a visual target or sound; they direct the fovea at a goal.

Thus, saccades respond to the full range of sensory inputs (visual, vestibular, auditory, somatosensory) and to internal cognitive factors.