Crossed Eyes and Eye Turns
What Are Crossed Eyes and Eye Turns
Eye turns are classified by the direction the misaligned eye points. Esotropia describes an eye that turns inward toward the nose, while exotropia means the eye drifts outward toward the ear. Hypertropia and hypotropia refer to vertical misalignments where one eye sits higher or lower than the other.
Some people experience constant eye turns that are always visible, while others have intermittent strabismus that comes and goes. The type and pattern of misalignment help us determine the underlying cause and best treatment approach.
Proper eye alignment depends on six muscles around each eye working together in perfect coordination. Your brain sends signals to these muscles to keep both eyes aimed at the same target. When the muscles work in balance, you see a single clear image and maintain depth perception.
If the brain cannot coordinate these muscles correctly, or if the muscles themselves are too strong or too weak, the eyes will point in different directions. This breakdown in the normal control system is what we call strabismus.
Crossed eyes and amblyopia, often called lazy eye, are closely related but different conditions. When the eyes are misaligned, the brain receives two different images and may ignore the input from the turned eye to avoid confusion. Over time, the ignored eye can lose its ability to see clearly, even with glasses.
This is why treating crossed eyes early is so important, especially in children. We aim to restore alignment and ensure both eyes develop normal vision during the critical window of childhood.
Yes, some forms of strabismus are intermittent and only appear under certain conditions. You might notice an eye turn when your child is tired, sick, or focusing on a distant object. Other people experience eye turns only when looking at close objects, such as when reading.
Even if an eye turn seems to disappear on its own, we recommend a comprehensive evaluation. Intermittent turns can become constant over time, and early intervention may prevent vision problems and make treatment easier.
Signs, Symptoms, and When to Seek Care
The most obvious sign of strabismus is visible eye misalignment. Parents often notice that their child's eyes do not look in the same direction, or that one eye appears to wander during play or when the child is concentrating. Some children close one eye in bright sunlight or when trying to focus.
- Eyes that do not move together or point in the same direction
- Squinting or closing one eye frequently
- Poor depth perception or clumsiness when reaching for objects
- Difficulty judging distances, especially on stairs or when playing sports
Adults who develop eye turns often experience double vision because their brain has learned to use input from both eyes. Children who have had crossed eyes since infancy typically do not complain of double vision because their brain has adapted by suppressing the image from one eye.
Other visual symptoms can include eyestrain, headaches, and difficulty reading or doing close work. Some people find that their eyes feel tired or uncomfortable after only short periods of visual tasks.
Many people with eye misalignment develop a habitual head tilt or turn to compensate. By positioning their head at a specific angle, they can sometimes reduce double vision or improve their ability to use both eyes together. This abnormal head posture can seem like a habit, but it often signals an underlying eye alignment problem.
Children may also adopt unusual viewing positions, such as turning their head to use one eye preferentially or tilting their chin up or down. If you notice consistent head tilting or turning, we should evaluate your child's eye alignment and muscle function.
Sudden onset of eye misalignment in adults or older children requires urgent medical attention. If crossed eyes appear suddenly along with severe headache, confusion, weakness, numbness, or difficulty speaking, seek emergency care immediately. These symptoms may indicate a stroke, brain injury, or other serious neurological condition.
- Eye turn that develops suddenly within hours or days
- Double vision that appears abruptly, especially with headache or neurological symptoms
- Eye misalignment following head trauma or injury
- Pupil size differences or drooping eyelid accompanying the eye turn
Causes and Risk Factors
Strabismus often runs in families, suggesting a genetic component. If you or your partner had crossed eyes as a child, your children have a higher risk of developing eye misalignment. While we cannot yet predict exactly who will develop strabismus based on family history alone, knowing this risk helps us monitor children more carefully.
We recommend early eye examinations for children with a family history of crossed eyes, amblyopia, or thick glasses. Catching misalignment early gives us the best opportunity to preserve normal vision development.
Some children are born with eye misalignment or develop it within the first few months of life. Infantile esotropia, a common form of crossed eyes, typically appears between two and six months of age. The exact cause remains unclear, but it relates to how the developing brain learns to control eye muscles.
- Premature birth and low birth weight increase strabismus risk
- Developmental delays and cerebral palsy are associated with higher rates of eye turns
- Uncorrected farsightedness can trigger accommodative esotropia in young children
- Down syndrome and other genetic conditions carry increased risk
Various medical conditions can interfere with normal eye alignment. Thyroid eye disease can enlarge and inflame the eye muscles, restricting their movement and causing misalignment. Diabetes can affect the nerves that control eye muscles, leading to sudden onset of double vision and eye turns.
Myasthenia gravis, a condition affecting nerve and muscle communication, often presents with variable eye misalignment that worsens with fatigue. Tumors or lesions affecting the brain or eye socket can also disrupt normal eye muscle function.
Head trauma, even seemingly mild injuries, can damage the nerves or muscles that control eye movement. Motor vehicle accidents, falls, and sports injuries are common causes of acquired strabismus. The eye turn may appear immediately after injury or develop gradually over weeks.
Stroke and other neurological events can affect the brain centers that coordinate eye movements or damage the nerves traveling from the brain to the eye muscles. In these cases, the eye misalignment is a symptom of a larger neurological problem that requires comprehensive medical evaluation.
Some adults develop eye turns later in life without any obvious injury or disease. The muscles and connective tissues around the eyes can change with aging, and previous good alignment may break down. Small childhood eye turns that were controlled or compensated may become more noticeable as we age.
Other adults experience decompensation of a longstanding eye turn that was previously controlled through effort. This can happen during times of illness, stress, or simply as part of the natural aging process.
How We Diagnose Eye Misalignment
We begin with a thorough history, asking about when you first noticed the eye turn, whether it is constant or intermittent, and whether it has changed over time. We will ask about your medical history, medications, injuries, and family history of eye problems. For children, we also ask about birth history and developmental milestones.
The physical examination includes assessing how your eyes move, checking the alignment in different gaze positions, and evaluating your overall eye health. We examine the front and back of your eyes to look for any structural problems that might contribute to misalignment.
The cover test is our primary tool for detecting and measuring eye misalignment. We ask you to look at a target while we cover one eye at a time, watching for movement in the uncovered eye. If the eye moves to pick up fixation when we cover the other eye, we know strabismus is present.
- The alternate cover test helps us measure the total deviation
- The unilateral cover test shows whether each eye can maintain fixation
- We perform cover tests at both distance and near to see if the angle changes
- Testing in different gaze positions reveals which muscles may be weak or restricted
We quantify the angle of eye turn using prism diopters, a standardized measurement system. By placing prisms of increasing strength in front of your eyes during the cover test, we determine precisely how much deviation is present. This measurement guides our treatment planning and helps us track changes over time.
The angle of strabismus can vary depending on which direction you are looking, whether you are focusing on near or distant objects, and which eye is fixing on the target. We measure these different scenarios to understand the full pattern of your eye misalignment.
Checking your vision and refractive error is essential because uncorrected farsightedness, nearsightedness, or astigmatism can contribute to eye turns. In children, we often use dilating eye drops to relax the focusing muscles and get an accurate glasses prescription. The right glasses prescription can sometimes eliminate or reduce the eye turn, especially in accommodative esotropia.
We also test each eye separately to check for amblyopia. If one eye has significantly reduced vision, we need to address both the eye turn and the vision loss for the best outcome.
Most cases of strabismus do not require imaging or lab work, but certain patterns raise concern for underlying disease. If you develop sudden eye misalignment as an adult, especially with other neurological symptoms, we may recommend brain imaging with MRI or CT scan. Blood tests can check for thyroid disease, myasthenia gravis, or diabetes if we suspect these conditions.
- MRI or CT imaging for sudden onset strabismus, especially in adults
- Thyroid function tests if eye turn is accompanied by bulging eyes or lid retraction
- Blood glucose and diabetes screening when indicated
- Specialized neurological testing if we find concerning eye movement patterns
Treatment Approaches for Crossed Eyes and Eye Turns
For some patients, especially children with accommodative esotropia, the right glasses prescription alone can straighten the eyes. Farsightedness forces children to use extra focusing effort, which can trigger eye crossing. Glasses relieve this effort and may completely eliminate the inward turn.
Prism lenses bend light before it enters the eye and can reduce or eliminate double vision in adults with small eye deviations. We incorporate prism into your glasses prescription when appropriate. While prisms do not cure strabismus or train the eyes to align, they can significantly improve comfort and function.
If amblyopia is present along with the eye turn, we typically recommend patching the stronger eye to force the brain to use the weaker eye. This treatment improves vision in the amblyopic eye but does not directly fix eye alignment. Patching works best in young children and requires consistent daily use.
Vision therapy involves structured exercises designed to improve eye coordination and teaming. Some patients benefit from exercises that strengthen convergence or help the eyes work together more effectively. Vision therapy can be particularly helpful for convergence insufficiency and intermittent exotropia, though results vary among individuals.
In select cases, we may use botulinum toxin injections to temporarily weaken an overactive eye muscle. The injection allows the opposing muscle to pull the eye into better alignment while the medication is active. As the effect wears off over several months, some patients maintain improved alignment.
This approach may be considered in specific cases, such as acute sixth nerve palsy or small angle strabismus in adults. Botulinum toxin is not appropriate for every type of eye turn, and we will discuss whether this option might benefit your particular situation.
Eye muscle surgery is the most effective treatment for many types of strabismus. During the procedure, we adjust the position or tension of the eye muscles to improve alignment. Surgery is typically performed under general anesthesia, and most patients go home the same day. The procedure involves making small incisions in the tissue covering the eye to access the muscles underneath.
- We may weaken a muscle by moving its attachment point backward on the eye
- We can strengthen a muscle by shortening it or moving its attachment forward
- Surgery may be performed on one or both eyes depending on the type of misalignment
- Most patients experience improved alignment, though perfect results are not always achieved
- Risks include infection, bleeding, overcorrection, undercorrection, and rare vision-threatening complications
The best treatment depends on the type and severity of your eye turn, your age, whether amblyopia is present, and your visual needs. For young children with accommodative esotropia, glasses may be all that is needed. Children with infantile esotropia typically need surgery before age two for the best chance of developing some level of eye teaming.
Adults with new onset strabismus need evaluation and treatment of any underlying medical cause first. We then consider whether prisms, vision therapy, botulinum toxin, or surgery will best address the eye misalignment and double vision. Your preferences and lifestyle also factor into our treatment planning.
Eye muscle surgery does not always achieve perfect alignment on the first attempt. Some patients need additional surgery to fine-tune the results. This does not mean the first surgery failed; rather, the eye muscles can respond variably, and healing may affect final alignment.
If glasses or vision therapy do not provide sufficient improvement, we may recommend adding other treatments or proceeding to surgery. Our goal is to achieve the best possible alignment and visual function, and we will work with you through multiple steps if needed.
Recovery and Follow-Up Care
Your eyes will be red and irritated for one to two weeks after surgery. Most people experience discomfort rather than severe pain, and over-the-counter pain relievers are usually sufficient. You may have double vision temporarily as your brain adjusts to the new eye position.
- Redness and pink appearance of the white of the eye for several weeks
- Scratchy or irritated sensation that gradually improves
- Mild swelling and possible bruising around the eye
- Temporary double vision as the visual system adapts
- Most adults return to desk work within a few days; children return to school within a week
After surgery or other alignment treatment, some patients benefit from vision therapy to help the eyes learn to work together. If your eyes have been misaligned for a long time, your brain may need practice fusing the images from both eyes into a single picture. We will recommend specific exercises if we believe they will improve your outcome.
Continued patching may be necessary if amblyopia persists after we correct the eye turn. Addressing both the alignment and the vision in each eye gives you or your child the best chance for good visual function.
After starting treatment for crossed eyes, we will see you regularly to monitor progress. In the first few weeks after surgery, we check the healing and measure the alignment. Over the following months and years, we continue to track stability and watch for any drift back toward the original position.
Children need regular follow-up throughout their development because eye alignment can change as they grow. Adults with strabismus also need periodic monitoring, especially if the eye turn was caused by a medical condition that requires ongoing management.
Treatment for crossed eyes can feel overwhelming for children and parents alike. Wearing glasses full-time, patching several hours daily, or undergoing surgery requires cooperation and patience. We encourage you to maintain a positive attitude and follow through with our recommendations consistently.
- Make patching part of your daily routine, pairing it with favorite activities
- Explain treatments in age-appropriate terms so your child understands why they are important
- Reward compliance with praise and small incentives rather than focusing on perfection
- Connect with other families dealing with similar challenges for support and encouragement
Frequently Asked Questions
Most children do not outgrow true strabismus without treatment. While newborns may have wandering eyes that stabilize by three to four months of age, persistent eye misalignment beyond this period requires professional evaluation and usually needs intervention. Waiting to see if a child outgrows an eye turn risks permanent vision loss from amblyopia and makes treatment more difficult later.
Yes, adults can develop sudden eye misalignment due to stroke, head injury, thyroid disease, diabetes, or other medical conditions affecting the nerves or muscles that control eye movement. This is different from childhood strabismus and requires prompt medical evaluation to identify and treat any underlying cause. Adults who suddenly develop double vision or eye misalignment should seek care urgently.
No, not all cases of eye misalignment require surgery. Some children with accommodative esotropia can be fully treated with glasses alone. Small deviations in adults may be managed with prism lenses. Vision therapy can help certain types of intermittent strabismus. However, many patients do eventually need surgery for the best long-term alignment and to preserve or restore the ability to use both eyes together.
If left untreated, crossed eyes can lead to permanent vision loss in the misaligned eye through amblyopia. The earlier we detect and treat both the eye turn and any associated vision problems, the better the chance of preserving normal vision in both eyes. Children treated early often develop at least some ability to use both eyes together, while those treated later may achieve good alignment but limited depth perception.
Screen time does not cause strabismus, but it may make existing eye turns more noticeable or symptomatic. Prolonged near work can trigger eye turns in children with intermittent exotropia or reveal convergence problems that were previously subtle. If you notice your child's eye alignment worsening during or after screen use, we should evaluate their eye teaming and consider whether treatment is needed.
Getting Help for Crossed Eyes and Eye Turns
If you or your child has an eye turn, we encourage you to schedule a comprehensive eye examination. Early evaluation and treatment provide the best opportunity to preserve vision, restore eye alignment, and prevent complications. Our eye doctor will work with you to develop a personalized treatment plan that addresses your specific type of strabismus and visual needs.