Cross eyes, medically known as strabismus, affects how the eyes align and work together. When one eye points in a different direction than the other, whether inward, outward, upward, or downward, it disrupts normal vision development and depth perception. Early diagnosis and treatment can prevent permanent vision loss and help restore proper eye coordination. Our optometrists serve families throughout Orange County with comprehensive evaluation and personalized treatment for eye misalignment at any age. You can use our kids symptom checker to learn more about your child's vision.
The eye muscles receive signals from the brain that tell them how to move and where to point. When the muscles themselves are weak, tight, or unbalanced, or when the nerve signals controlling them are disrupted, one or both eyes may drift out of position. This misalignment can be constant or may come and go depending on factors like fatigue, illness, or focusing effort.
In babies and young children, the visual system is still developing. The brain is learning to control eye movements and blend images from both eyes into a single picture. If this developmental process is interrupted or delayed, cross eyes may result. In adults, the condition typically develops due to injury, medical conditions, or nerve damage that affects the mature visual system.
Eye doctors classify strabismus based on the direction the eye turns. Esotropia describes an eye that turns inward toward the nose, and this is the most common form in young children. Exotropia occurs when an eye drifts outward toward the ear. Vertical misalignments include hypertropia, where the eye turns upward, and hypotropia, where it turns downward.
The misalignment may affect the same eye consistently or alternate between the right and left eye. Some people experience crossing only when looking at near objects, while others show misalignment primarily at distance or all the time.
Normal binocular vision depends on both eyes pointing at the same target and sending matching images to the brain. The brain blends these images together to create a single three-dimensional picture, which gives you depth perception and the ability to judge distances accurately. Cross eyes disrupts this process by sending mismatched images to the brain.
To avoid confusion from the conflicting images, the brain may suppress or ignore the input from the turned eye. While this eliminates double vision, it also prevents the development of depth perception. Children who grow up without binocular vision may struggle with tasks like catching a ball, pouring liquids, or navigating stairs. If you or your child experience seeing two of a single object, take our double vision quiz.
Newborn babies often have wandering eye movements during the first few months as their visual system matures. However, by three to four months of age, the eyes should align consistently. If crossing persists or worsens beyond this point, evaluation by an eye doctor is important. Understanding the gold standard of care for these conditions ensures the best outcomes.
Children between ages two and five commonly develop accommodative esotropia, a type of cross eyes related to uncorrected farsightedness. The developing brain in this age group is more adaptable, which makes early treatment especially effective. Adults who develop strabismus usually experience sudden onset due to stroke, injury, or medical conditions, and they typically notice double vision because their mature brain cannot easily ignore the misaligned image.
Cross eyes develops when the muscles controlling eye movement fail to work together properly. Each eye has six muscles that must coordinate perfectly to maintain alignment, and when this teamwork breaks down, misalignment occurs. Understanding how and why this happens helps you recognize the condition early and pursue appropriate treatment.
Recognizing cross eyes early allows for prompt treatment and better outcomes. Some signs are obvious, while others are subtle and easy to overlook. Being aware of both the visible and functional symptoms helps you know when to seek evaluation.
The most noticeable sign of cross eyes is seeing one eye point in a different direction than the other. You might observe this misalignment all the time, or it may appear only when your child is tired, sick, daydreaming, or focusing on objects that are very close or far away. Sometimes the turning is subtle and harder to notice during everyday activities.
Photographs can reveal eye misalignment that may not be obvious in person. When you look at photos, check whether the light reflections appear in the same position in both eyes. If the reflections are asymmetric or in different locations, this suggests possible misalignment worth discussing with an eye doctor.
Children with cross eyes may complain that their vision is blurry or that they see better when one eye is closed or covered. They might squint frequently or tilt their head to see more clearly. Young children often cannot articulate that their vision is abnormal, so behavioral signs become important clues.
Difficulty with reading is common, including losing their place on the page, skipping lines, or avoiding books altogether. Hand-eye coordination tasks like catching, threading beads, or coloring within lines may be unusually challenging. Double vision is more typical in older children and adults whose brains cannot suppress the image from the misaligned eye.
Many people with cross eyes develop unusual head postures to minimize double vision or help their eyes work together better. They may consistently tilt their head to one side, turn their face in a particular direction, or lift or lower their chin when looking at objects. These adaptations happen unconsciously as the brain seeks the head position that produces the clearest, most comfortable vision.
Parents often notice that their child always looks at the television from an angle, turns their whole head instead of moving just their eyes, or holds books in unusual positions. While these compensations may temporarily improve vision, they do not fix the underlying problem and can lead to neck discomfort or other issues over time.
Most cases of cross eyes develop gradually, but sudden onset of eye misalignment in someone who previously had straight eyes requires prompt evaluation. If this sudden misalignment is accompanied by severe headache, double vision, confusion, weakness, difficulty speaking, or changes in balance, seek emergency medical care immediately. These symptoms could indicate a stroke, brain injury, infection, or other serious neurological condition.
Rapid development of strabismus in a child also warrants urgent assessment to rule out conditions like brain tumors or increased pressure within the skull. When you notice any abrupt change in eye alignment, contact our office right away for guidance on the appropriate next steps.
While cross eyes can affect anyone, certain factors increase the likelihood of developing this condition. Understanding these risk factors helps identify children who may benefit from earlier or more frequent vision screening. It also guides us in looking for underlying medical conditions that may need attention.
Cross eyes tends to run in families, suggesting that genetics play a significant role. If you or your partner had strabismus as a child, your children face a higher risk of developing it as well. The specific genes involved are not fully understood, but having a close relative with eye misalignment substantially increases the likelihood.
Because of this hereditary component, we recommend earlier and more frequent eye examinations for children with a family history of strabismus. Early detection allows us to begin treatment during the optimal window when the visual system is most responsive to intervention.
Several health conditions are associated with increased risk of cross eyes. Neurological conditions like cerebral palsy, Down syndrome, hydrocephalus, and brain tumors can affect the muscles or nerves that control eye movement. Thyroid eye disease causes inflammation and swelling of the eye muscles in adults. Diabetes can damage the nerves supplying the eye muscles, and myasthenia gravis causes muscle weakness that may include the eyes.
Children with these conditions benefit from regular eye examinations to monitor for signs of misalignment. Early detection and treatment can prevent or minimize vision loss even when the underlying condition cannot be cured.
The cranial nerves carry signals from the brain to the six muscles around each eye, directing precise movements necessary for alignment. Damage to these nerves from injury, stroke, infection, or other causes can result in paralytic strabismus, where one or more muscles cannot move the eye properly. This type typically causes sudden-onset double vision and limitation of eye movement in specific directions.
Direct muscle problems, including weakness, scarring, or restrictions from previous eye surgery or orbital trauma, can also prevent normal eye movement and alignment. Sometimes a muscle may be congenitally absent or abnormally positioned, causing strabismus from birth.
Babies born prematurely face higher risk of cross eyes compared to full-term infants. The visual system continues developing during the final weeks of pregnancy, and premature babies miss this crucial developmental period. Additionally, conditions common in prematurity, such as retinopathy of prematurity and intraventricular hemorrhage, further increase the risk of strabismus.
Uncorrected farsightedness is a common trigger for cross eyes in young children. When a child must exert excessive focusing effort to see clearly, especially for near tasks, this effort may cause one eye to turn inward. This type, called accommodative esotropia, often responds well to eyeglasses alone.
Accurate diagnosis of cross eyes involves more than simply observing that the eyes do not align. We need to determine the type and magnitude of misalignment, identify any underlying causes, assess how the condition affects vision, and develop an appropriate treatment plan. A thorough examination provides the foundation for successful management.
When you visit our office for evaluation of possible cross eyes, we begin by discussing your symptoms, when the misalignment started, family history, and any related medical conditions. We observe how your eyes move and align while you look at targets at different distances and in different directions. For young children, we use toys, lights, and engaging activities to encourage cooperation and assess their eye movements naturally.
The examination is gentle and non-invasive. Most tests involve following targets with your eyes, looking through different lenses, or briefly having lights shined at the eyes. We create a comfortable, child-friendly environment to help even very young patients cooperate during testing.
The cover test is one of our most valuable diagnostic tools. We have you focus on a target while we alternately cover and uncover each eye, watching for any movement that reveals misalignment. We measure how much the eye must move to refixate, which tells us the magnitude of the deviation. This test works even with very young children who cannot read letters or answer questions.
We check visual acuity in each eye separately using age-appropriate methods, from picture charts for preschoolers to standard letter charts for older children and adults. Refraction testing determines whether eyeglasses are needed and what prescription would be most helpful. We also assess depth perception, eye tracking, and how well the two eyes work together as a team.
When cross eyes develops suddenly in an adult, or when we identify concerning features during the examination, additional testing may be necessary. Blood tests can screen for thyroid disease, diabetes, myasthenia gravis, or other conditions that affect the eye muscles or nerves. A dilated eye exam allows us to thoroughly examine the retina and optic nerve for signs of disease.
Some situations require neurological examination or imaging studies such as MRI or CT scans of the brain and eye sockets. These tests help identify tumors, vascular malformations, strokes, or structural abnormalities that could be causing or contributing to the eye misalignment.
While we can diagnose and manage many cases of cross eyes in our office, some situations benefit from additional subspecialty expertise. When an infant has complex strabismus, significant additional eye abnormalities, or certain patterns of misalignment, we may coordinate care with a pediatric ophthalmologist. Adults with sudden-onset strabismus often need evaluation by a neuro-ophthalmologist who specializes in eye problems related to neurological disease.
If eye muscle surgery becomes necessary, we refer you to a strabismus surgeon with extensive training in these procedures. We maintain close communication with these specialists to ensure coordinated, comprehensive care and continue to co-manage your treatment and long-term follow-up.
Treatment for cross eyes depends on the type of misalignment, the underlying cause, your age, and how the condition affects your vision. The goal is to achieve proper eye alignment, preserve or restore vision in both eyes, and establish binocular vision and depth perception when possible. Many patients benefit from a combination of treatment approaches over time.
For many children with cross eyes, uncorrected farsightedness contributes significantly to or completely causes the eye misalignment. When a child must focus very hard to see clearly, the excessive focusing effort can trigger the eyes to cross. Eyeglasses that correct this refractive error often reduce or eliminate the crossing without any other treatment needed.
We typically prescribe the full amount of farsightedness correction for children with accommodative esotropia. Your child will need to wear these glasses during all waking hours for them to work effectively. Regular follow-up visits help us monitor whether the glasses are adequately controlling the misalignment and whether the prescription needs adjustment as your child grows.
Vision therapy involves a structured program of activities designed to improve how the eyes work together and strengthen the brain-eye connection. This treatment may be appropriate for certain types of strabismus, particularly intermittent exotropia or convergence insufficiency, and for reducing symptoms or improving function even when perfect alignment is not achieved.
Our vision therapy program is led by optometrists with fellowship training and board certification in pediatric developmental vision care and vision rehabilitation. Dr. Valerie Lam, OD, FAAO, FOVDR, and Dr. Ariel Chen, OD, specialize in treating strabismus and amblyopia through customized therapy programs. Treatment typically involves weekly in-office sessions combined with daily home exercises, with duration varying based on individual progress and goals.
Prism lenses bend light before it enters the eye, shifting the image position and helping to compensate for eye misalignment. These special lenses can be incorporated into eyeglasses to reduce or eliminate double vision in some patients. Prisms work well for small to moderate amounts of misalignment and are often used for adults with recent-onset strabismus while we investigate the underlying cause.
Prisms may serve as a temporary solution while waiting for other treatments to take effect or as a long-term option for patients who cannot have surgery or prefer to avoid it. The amount of prism needed may change over time, requiring periodic adjustments to the prescription.
Surgery to reposition the eye muscles is often the most effective treatment for moderate to severe cross eyes. During the procedure, the surgeon adjusts the position or tension of one or more eye muscles to improve alignment. The surgery is typically performed on an outpatient basis under general anesthesia for children or sometimes local anesthesia for adults.
Success rates vary depending on the type and severity of strabismus, but most patients achieve significantly improved alignment. Some people require more than one surgery to achieve optimal results, as the final alignment continues to settle over weeks to months after the procedure. We discuss realistic expectations, potential risks, and likely benefits before recommending surgical intervention.
In selected cases, botulinum toxin injections into the eye muscles may be considered as an alternative to surgery or as an additional treatment. The medication temporarily weakens the overactive muscle, allowing the opposing muscle to pull the eye toward better alignment. This approach may be appropriate for certain types of nerve-related strabismus or for some adults who are not good candidates for surgery.
The effects of botulinum toxin are temporary, typically lasting several months. The procedure requires specialized expertise and is performed with careful precision to ensure safety and effectiveness.
Many children with cross eyes also develop amblyopia, commonly called lazy eye, where one eye fails to develop normal vision even though the eye itself is structurally healthy. This happens when the brain favors one eye and suppresses input from the other. Treating amblyopia is essential for achieving the best possible visual outcome.
Patching the stronger eye forces the brain to use and develop the weaker eye. Some children respond well to atropine eye drops that temporarily blur vision in the stronger eye, serving a similar purpose as patching. Treatment must begin during childhood while the visual system is still developing. Amblyopia therapy often continues for months or years, and regular monitoring ensures progress while protecting vision in the stronger eye.
Successful treatment of cross eyes requires consistent follow-through at home. Your commitment and encouragement make a tremendous difference in how well and how quickly your child responds to treatment. Creating positive routines and maintaining regular follow-up care helps achieve the best possible outcomes.
Whether the treatment plan involves wearing glasses full-time, completing daily patching hours, or practicing vision therapy exercises, consistency is key. Creating a regular routine helps make treatment a normal part of your child's day rather than an ongoing struggle. Choose specific times for activities like patching, such as during a favorite television show or game, to make the experience more pleasant.
Positive reinforcement works far better than punishment or criticism. Praise your child when they cooperate with treatment, and consider using reward charts or small incentives for younger children. Explaining why treatment is important in age-appropriate terms helps children understand and participate more willingly.
Getting children to consistently wear glasses or patches can be one of the biggest challenges in treating cross eyes. Select frames that fit comfortably and let your child help choose a style they like, which increases the likelihood they will wear them willingly. For patches, some children prefer adhesive patches that stick to the skin around the eye, while others do better with cloth patches that attach over the glasses lens.
Make patch time during enjoyable activities to create positive associations. Connect with other parents facing similar challenges through support groups, either in person or online. Consider decorating patches with stickers or choosing fun designs to make them more appealing. Keep spare glasses and patches available in case of loss or damage so treatment can continue without interruption.
Cross eyes requires ongoing monitoring even after successful initial treatment. Children's eyes and vision continue to change as they grow, and sometimes misalignment can recur or the treatment needs adjustment. We typically recommend follow-up exams every three to six months during active treatment and annually thereafter to monitor stability.
During these visits, we check eye alignment, measure vision in each eye, assess binocular function, and adjust the treatment plan as needed. Your child's eyeglass prescription may change as they grow, and some children require additional interventions over time. Maintaining regular appointments allows us to detect and address any problems early when they are easiest to treat.
If you notice signs of eye misalignment in your child or yourself, schedule a comprehensive evaluation to determine the cause and develop an appropriate treatment plan. Early intervention offers the best opportunity to preserve vision, restore eye alignment, and support healthy visual development. Our team at Insight Vision Center Optometry provides pediatric and adult strabismus care, including advanced vision therapy programs and coordination with surgical specialists when needed.
While occasional eye wandering in newborns up to three to four months of age may resolve as the visual system matures, true cross eyes that persists beyond early infancy will not go away without treatment. The idea that children outgrow strabismus is a harmful myth that can lead to delayed treatment and permanent vision loss. If your child's eyes do not consistently align by four months of age, evaluation and treatment are important to protect vision and visual development.
Not every case of strabismus requires surgery. Many children whose eye crossing is primarily caused by uncorrected farsightedness achieve good alignment with glasses alone. Some types of intermittent strabismus or binocular vision problems respond to vision therapy. However, when the eye misalignment is constant, large in magnitude, or not adequately controlled by glasses, surgery often becomes the most reliable way to achieve proper alignment, restore appearance, and give the best chance for developing normal binocular vision.
The potential for developing normal depth perception depends heavily on how early treatment begins and how well the eyes can be aligned. Children treated before age two or three, when the visual system is most adaptable, have the best chance of achieving good binocular vision and depth perception. Those treated later may achieve cosmetically acceptable alignment but may not develop full stereoscopic depth perception. However, even without perfect depth perception, most people adapt well and function normally in daily activities.
Yes, adults can develop eye misalignment even if their eyes were straight throughout childhood. Common causes include stroke, head injury, thyroid disease, diabetes, myasthenia gravis, or damage to the nerves that control eye muscles. Adult-onset strabismus requires thorough evaluation to identify potentially serious underlying conditions. Treatment focuses on addressing the underlying cause when possible, and may include prism glasses, vision therapy, botulinum toxin injections, or surgery to reduce double vision and improve alignment.
Voluntarily crossing your eyes for brief periods, such as when making silly faces, does not cause permanent eye damage or lead to strabismus. This is an old myth without medical basis. Your eye muscles are designed to move in all directions, including inward, and briefly crossing your eyes will not harm them. However, if someone develops a persistent eye turn after years of normal alignment, this represents a true medical condition requiring evaluation, regardless of any history of voluntary eye crossing.
