The Signs and Symptoms May Not Be Immediately Apparent
Eyes That Move Differently
Normally, both eyes move in unison. In the case of strabismus, one eye is weaker than the other, causing it to move in a different direction. The misaligned eye may point inward (esotropia), outward (exotropia), upward (hypertropia), or downward (hypotropia).
Inability to Determine Depth
To create relative depth perception, both eyes must work together. When your eyes do not aim at the same object simultaneously, it can result in partial or total loss of binocular depth perception.
Eye Strain and Headaches
Strabismus that is intermittent or alternating can result in headaches and eye strain, which can make it difficult to concentrate. It can also create unstable or "jittery vision."