Esotropia is caused by a lack of coordination of your eye muscles. Usually, your eye muscles work together, as a binocular system (“seeing with two eyes”). You can tell how close you are to something. It’s important for eyes to work together while you’re riding a bicycle or driving a car or reading.
People with esotropia are typically farsighted, meaning they can see things that are farther away more clearly than things that are closer. Sometimes, esotropia is a sign that you need glasses to correct farsightedness.
Esotropia is sometimes genetic. You may have other family members with misaligned eyes.
Esotropia can be a sign of other conditions, including: