Our eyes speak a universal language. However, when the eyes are not perfectly aligned and seem to look in different directions, we call it strabismus. Although this condition is often seen as a purely cosmetic problem, it has profound implications for visual health, especially in childhood. At Clínica Ramírez & Gálvez, we want to offer you a complete guide to strabismus: what it is, why it happens, how it affects vision and which treatments can align the eyes, improving both visual function and facial harmony.
What Is Strabismus? Eye Misalignment and Its Impact 🤔
Strabismus is a disorder of eye alignment in which the eyes do not point in the same direction at the same time. While one eye looks at a point, the other turns inwards, outwards, upwards or downwards. The condition is more common in children, but it can also appear in adults.
Why does strabismus matter?
- In children: A turned eye can lead to amblyopia (known as “lazy eye”), a condition in which the brain ignores the image from the deviated eye to avoid double vision, resulting in permanently poor vision in that eye if it is not treated in time. The development of binocular vision (3D vision) is also affected.
- In adults: Although amblyopia no longer develops, strabismus can cause double vision (diplopia), eye strain and a significant cosmetic impact.
Causes of Strabismus: A Coordination Problem 🧩
Eye movement is controlled by six extraocular muscles in each eye, which must work in coordination. Strabismus occurs when these muscles do not work together properly. The causes can vary:
- Refractive Problems: Uncorrected hyperopia (long-sightedness) is a common cause in children. The effort to focus can make one eye turn inwards (accommodative strabismus).
- Muscle or Nerve Problems: Disorders of the extraocular muscles or of the nerves that control them.
- Eye Diseases: Cataracts, glaucoma, retinal diseases or eye tumours that affect the vision of one eye can lead to deviation.
- Systemic Diseases: Some neurological or genetic conditions can be associated with strabismus.
- Heredity: There may be a family predisposition. 👨👩👧👦
- Injuries: Blows to the head or eye can affect alignment.
Types of Strabismus: How the Eyes Deviate 🔍
There are different types of strabismus depending on the direction of the deviation:
- Esotropia: One or both eyes turn inwards (towards the nose). This is the most common type in children.
- Exotropia: One or both eyes turn outwards (towards the ear).
- Hypertropia: One eye turns upwards.
- Hypotropia: One eye turns downwards.
The deviation may be constant or intermittent, and may always affect the same eye or alternate between both.
Symptoms of Strabismus: Beyond the Visible Deviation ⚠️
Although visible misalignment is the clearest sign, there are other symptoms:
- Visible eye deviation: The most obvious sign.
- Double vision (diplopia): More common in adults, as their brain does not suppress the image from the deviated eye.
- Visual confusion: Especially in adults, when the brain tries to process two different images.
- Eye strain: Tired eyes, especially when reading. 😫
- Headaches. 🤕
- Squinting or tilting the head: To try to see with both eyes or to eliminate double vision.
- Amblyopia (lazy eye): In children, if the brain ignores the image from one eye.
- Poor depth perception (3D vision).
Diagnosing Strabismus: A Complete and Early Eye Examination 🔬
Early diagnosis is vital, especially in children, to prevent amblyopia. The ophthalmologist will carry out a complete examination, including:
- Visual Acuity Test: To assess the vision of each eye.
- Refraction: To detect errors such as hyperopia.
- Eye Alignment Assessment: Specific tests to determine the type and degree of deviation.
- Fundus Examination: To rule out other eye conditions.
- Binocular Vision Tests: To assess the ability to see in 3D.
Treating Strabismus: Towards Aligned and Functional Eyes ✨
The aim of strabismus treatment is twofold: to improve the cosmetic alignment of the eyes and to restore binocular vision (3D vision) where possible. The choice of treatment will depend on the cause, type and severity of the strabismus, and on the patient’s age.
- Optical Correction (Glasses):
- This is the first step, especially if the strabismus is caused by hyperopia. Glasses can correct the deviation in cases of accommodative strabismus. 👓
- Vision Therapy (Eye Exercises):
- Specific exercises to strengthen the eye muscles and improve coordination between the eyes. They can be helpful in some types of strabismus.
- Eye Patch (Occlusion):
- Used mainly in children with amblyopia. The “good” eye is covered to force the brain to use the “lazy” eye and develop its vision.
- Botulinum Toxin (Botox):
- In some cases of strabismus, injecting botulinum toxin into the eye muscles can temporarily weaken them, helping to align the eyes. It is an option for small deviations or for cases of paralysis. 💉
- Strabismus Surgery:
- This is the most common treatment when other options are not enough. Surgery aims to modify the length or position of the extraocular muscles to realign the eyes. A muscle can be shortened or repositioned to make it stronger, or lengthened or moved to make it weaker.
- Benefits: A significant improvement in cosmetic alignment and, in many cases, recovery of binocular vision, especially if performed in childhood. In adults, it relieves double vision and improves appearance.
- Procedure: It is performed under general anaesthesia (especially in children) or local anaesthesia with sedation. The incision is made in the conjunctiva (the white surface of the eye), so it leaves no visible scars.
- Results: These can be very satisfactory, although sometimes more than one operation or later adjustments are needed.
Aligned Eyes for Complete Vision and a Better Quality of Life 💖
Strabismus is a condition that goes beyond appearance; it affects the way we see the world and how we interact with it. Early detection and appropriate treatment are essential to prevent permanent visual complications, especially in children. At Clínica Ramírez & Gálvez, our expert ophthalmologists specialise in the diagnosis and comprehensive management of strabismus, offering you the most advanced and personalised treatment options so that you or your children can enjoy aligned eyes, complete vision and a better quality of life. Don’t hesitate to contact us!