It may progress to being present at distance or near, and may become more constant. If not treated, it can continue into adulthood, and the person's eye may continue to wander out at times unknowingly. Duane's syndrome is a fairly common ocular misalignment present from birth. Usually, one eye or the other cannot turn outward, away from the nose, all of the way. On inturning of the eye, the eyelid opening seems to narrow, and the affected eye appears to pull back into the orbit.
Double vision can develop in certain positions of gaze.
People with this condition often adopt a head turn toward the affected eye. Thus, the affected eye is usually turned toward the nose, and the eyes stay properly aligned, and double vision is avoided. Convergence insufficiency - this indicates a problem with the natural inturning of the eyes that occurs with reading. People with this problem have to struggle to keep the eyes aligned when looking at something close. Often the eyes will separate apart at some point, the text will seem to run together, and the reading must be temporarily stopped.