Strabismus, commonly known as crossed eyes or eye turn, is a condition where the eyes do not align properly. This misalignment can be constant or intermittent and may cause the eyes to turn inward, outward, upward, or downward. Affecting approximately 2 to 4 percent of the population, strabismus typically develops in early childhood.
While it might appear to be merely a cosmetic issue, strabismus is a complex visual problem that can disrupt normal vision development. Without proper treatment, it can lead to amblyopia, or lazy eye, where the brain favors one eye over the other. This can significantly impact a child's depth perception and visual coordination.
The early years of a child's life are crucial for visual development. During this period, the eyes and brain work together to learn how to see correctly. Although it is normal for an infant's eyes to appear misaligned at birth, they should start working together consistently by four to six months of age.
Early intervention through vision therapy is essential not just for appearance but for fostering normal visual development. By taking advantage of the brain's neuroplasticity, children can develop the ability to use both eyes efficiently together. Correcting strabismus early can help prevent amblyopia and support better overall vision health.
If strabismus is suspected, early detection through a comprehensive eye exam by an optometrist is vital. Regular pediatric eye exams can identify alignment problems before they lead to more serious vision issues.
Esotropia is characterized by one or both eyes turning inward toward the nose. It can lead to double vision, impaired depth perception, and may cause amblyopia if untreated. Early vision therapy can strengthen both eyes, improving image fusion and visual processing.
Exotropia occurs when one or both eyes turn outward, away from the nose. Often noticeable when the child is tired or focusing on distant objects, exotropia can cause eyestrain and headaches, interfering with activities like reading. Vision therapy focuses on strengthening eye convergence to improve alignment and depth perception.
Hypertropia involves an eye turning upward. It can cause vertical double vision and difficulty with activities requiring precise eye movements. Therapeutic interventions aim to improve eye coordination and accurate tracking.
Hypotropia, the downward turning of an eye, affects visual coordination and stability. This impacts activities from reading to sports. Treatment focuses on aligning both eyes to work together, enhancing spatial orientation.
Cyclotropia is a rotational misalignment of the eyes that can cause disorientation, dizziness, or visual discomfort. Treatment includes exercises to improve visual field orientation and align visual perception with physical movements.
During early childhood, the brain's ability to coordinate eye movements may not fully develop, leading to misalignment. Disturbances in neural pathways can compromise depth perception and visual functionality, making early intervention essential.
A family history of strabismus increases a child's risk. This highlights the importance of regular eye exams for early detection and management, especially if parents or siblings have experienced eye alignment issues.
Some children are born with or develop strabismus within the first six months of life. This is sometimes called infantile strabismus. Early diagnosis and prompt treatment are vital to prevent complications like amblyopia.
Acquired strabismus can result from injury, illness, or conditions affecting the visual system after birth. It may develop due to trauma to the eye or brain or from visual imbalances becoming more pronounced with age. Vision therapy can retrain the brain and eyes to work together harmoniously.
A noticeable deviation where one or both eyes turn inward, outward, upward, or downward is the most obvious sign. Parents may notice the misalignment in photographs or when the child is tired. Early detection helps prevent potential vision issues and social discomfort.
Children may struggle to keep their place while reading, leading to slower academic progress and avoidance of reading activities. They may skip words or lines, use a finger to track text, or complain that words seem to move on the page.
Impaired depth perception can make tasks requiring spatial judgment challenging. Activities like catching a ball, navigating stairs, or pouring liquids may be difficult. Children may appear clumsy or hesitant in unfamiliar environments.
Misaligned eyes can affect overall coordination and balance, interfering with physical activities and leading to frequent falls or mishaps. Some children may avoid sports or playground activities as a result.
Visual challenges can create obstacles in school, affecting reading comprehension, attention, and processing of visual information. Children may be misdiagnosed with learning disabilities when the underlying issue is a vision problem. Early treatment through vision therapy can improve eye alignment and enhance academic performance.
Children with noticeable eye turns may struggle with self-esteem and face teasing or social difficulties. They may avoid eye contact or feel self-conscious about their appearance. Addressing strabismus can boost confidence and improve social interactions.
Strabismus increases the risk of amblyopia, where the brain favors one eye and suppresses images from the misaligned eye. This can lead to permanent vision loss in the weaker eye if left untreated. Early intervention is crucial to prevent long-term consequences.
A thorough eye exam by a pediatric optometrist evaluates eye alignment, function, and the potential need for corrective lenses. The exam assesses how well the eyes work together and identifies any underlying conditions that may contribute to the misalignment.
Assessments include measuring the angle of deviation, testing near and far focus, and evaluating depth perception. Additional tests may examine eye movement control, focusing ability, and how the brain processes visual information. This comprehensive approach informs a tailored treatment plan.
Vision therapy is an individualized, supervised program aimed at improving eye function and visual processing. Sessions are conducted one on one with a trained vision therapist and focus on strengthening eye coordination, focusing, and tracking abilities. The goal is to enhance binocular vision so both eyes work together as a team.
Corrective lenses can enhance visual clarity and aid in aligning the eyes. This is especially helpful in accommodative esotropia, where farsightedness causes the eyes to turn inward when focusing. Properly prescribed lenses reduce the strain that contributes to misalignment.
Prism lenses are specialized lenses that shift the visual image to align with the eye's positioning. They can reduce strain and improve binocular function, helping the brain combine images from both eyes more easily.
Customized exercises support visual development outside of clinical settings. These activities reinforce skills learned during in-office vision therapy sessions and help maintain progress between appointments.
Surgery may be recommended when misalignment is significant or persistent and non-surgical interventions are not sufficient. The procedure involves repositioning the eye muscles to achieve better alignment. Surgery focuses on improving eye coordination, and vision therapy is often continued afterward to strengthen binocular vision and maintain results.
Dr. Valerie Lam, OD, FAAO, FOVDR leads pediatric vision therapy services at Insight Vision Center Optometry. She holds fellowships from the American Academy of Optometry and the College of Optometrists in Vision Development, and is board certified in Vision Therapy and Pediatric Developmental Vision Care. Dr. Ariel Chen, OD also provides vision therapy, with a focus on integrating care for children who have both strabismus and myopia management needs.
Vision therapy takes place at The Eye Gym at Insight Vision Center Optometry. Each session is conducted one on one with a trained therapist in a supportive environment designed for children. The program incorporates advanced tools and techniques to make therapy engaging and effective.
Treatment begins with a comprehensive evaluation to understand your child's specific visual needs. A personalized therapy plan is created, with regular progress assessments along the way. Many children show meaningful improvement in eye alignment, visual comfort, and daily function through consistent participation in their program.
Children should have their first comprehensive eye exam between six and twelve months of age. If there is a family history of strabismus or other eye conditions, earlier evaluation may be recommended. Regular exams should continue throughout childhood.
True strabismus does not typically resolve on its own. While occasional eye wandering in infants under four months may be normal, persistent misalignment after this age should be evaluated. Early treatment provides the best opportunity for successful outcomes.
The length of therapy varies based on the type and severity of strabismus and how consistently the child participates. Many children attend weekly sessions for several months to a year. Home exercises between sessions are an important part of the process.
Some children continue to wear glasses after completing vision therapy, especially if they have a significant refractive error like farsightedness. Glasses and vision therapy often work together to achieve the best results. Your eye doctor will discuss what to expect based on your child's specific situation.
Surgery is not required for all cases of strabismus. Many children respond well to non-surgical treatments like vision therapy and corrective lenses. Surgery may be considered when the angle of misalignment is large or when other treatments have not achieved sufficient improvement.
Yes, adults with strabismus can benefit from treatment. While outcomes may differ from those in children due to reduced brain plasticity, vision therapy and other interventions can still improve eye alignment, reduce symptoms like double vision, and enhance quality of life.
