Exotropes typically develop eccentric fixation in which direction?

Exotropes typically develop eccentric fixation in which direction?

• A. Nasal
• B. Temporal
• C. Superior
• D. Inferior

Answer: (B)

Exotropia invites the brain to use a nonfoveal retinal point for fixation so that images from both eyes can be fused despite the outward drift. In this pattern, the familiar nonfoveal locus is on the temporal side of the deviated eye’s retina. Using a point in the temporal retina as the fixation site helps align the two eyes’ visual directions enough to maintain single vision, even though the fovea isn’t looking directly at the target. That’s why temporal eccentric fixation is what exotropes typically develop. By contrast, nasal, superior, or inferior eccentric fixations are more commonly linked to other types of misalignment or vertical deviations, respectively.

Exotropia invites the brain to use a nonfoveal retinal point for fixation so that images from both eyes can be fused despite the outward drift. In this pattern, the familiar nonfoveal locus is on the temporal side of the deviated eye’s retina. Using a point in the temporal retina as the fixation site helps align the two eyes’ visual directions enough to maintain single vision, even though the fovea isn’t looking directly at the target. That’s why temporal eccentric fixation is what exotropes typically develop. By contrast, nasal, superior, or inferior eccentric fixations are more commonly linked to other types of misalignment or vertical deviations, respectively.