In-depth

Causes

Convergence insufficiency

Children whose eyes don't turn inward properly to focus on close objects may have trouble reading. But eye exercises may improve the condition.

Symptoms

Headache

Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Watery eyes

Tearing that goes beyond a happy or sad moment can stem from a variety of causes, from hay fever to more serious conditions.

Tests and diagnosis

Eye exam

Eye exam — Overview covers definition, what to expect and results of vision testing.

Sep. 19, 2012