Symptoms

Squint, or strabismus, occurs when the eyes do not align properly — one eye may turn inwards, outwards, upwards, or downwards while the other looks straight ahead. It can affect children and adults, either continuously or intermittently.

🔍 Common Symptoms:

👁️ Misaligned Eyes

• One or both eyes appear to wander or point in different directions
• May be constant or occur only at times (like when tired or ill)

👓 Double Vision (Diplopia)

• Seeing two images of a single object (mostly in adults)
• The brain struggles to merge two different visual inputs

🤕 Eye Strain or Headaches

• Due to the extra effort by eye muscles trying to align vision
• Often reported after reading or focusing for long periods

🙈 Squinting or Tilting Head

• A compensatory posture to focus or align vision
• Children may close one eye in bright light to avoid double vision

❌ Poor Depth Perception

• Difficulty in judging distances or 3D perception
• Common in those with untreated squint since childhood

📉 Reduced Vision (Lazy Eye/Amblyopia)

• In children, the brain may suppress the weaker eye, leading to lazy eye
• If untreated, it can cause permanent vision loss

Risk Factors

Squint (or strabismus) can develop due to genetic, neurological, muscular, or visual system problems. While some cases appear at birth, others develop later due to underlying health conditions or injuries.

🧬 1. Family History (Genetics)

• Children with a parent or sibling who had squint or lazy eye are at higher risk
• Certain genetic syndromes (e.g., Down syndrome) may also predispose squint

👶 2. Childhood Vision Problems

• Uncorrected refractive errors (like farsightedness/hyperopia) can cause eye strain, leading to squint
• Lazy eye (amblyopia) and poor binocular vision often contribute

🧠 3. Neurological Disorders

• Conditions such as:
  • Cerebral palsy
  • Stroke
  • Brain tumors
  • Hydrocephalus
  • Head injuries

can disrupt the cranial nerves that control eye movement.

💉 4. Premature Birth & Low Birth Weight

• Babies born before 37 weeks or with very low birth weight (<2500g) are at higher risk
• Often due to underdeveloped eye muscles or brain structures

👁️ 5. Previous Eye Surgery or Trauma

• Surgeries for cataract or retinal issues may alter eye alignment
• Trauma can damage eye muscles or nerves, resulting in squint

🔍 6. Tumors or Infections

• Retinoblastoma, optic nerve glioma, or severe eye infections can impact eye alignment

📚 7. Lack of Visual Stimulation in Early Childhood

• Children with poor exposure to light or visual targets may have delayed visual development, increasing squint risk

🚨 8. Diabetes or Thyroid Disorders (Adults)

• Especially thyroid eye disease (Graves’ orbitopathy) causes restricted eye movement and misalignment

🧒 Age-Specific Risks

Preparation Surgery

Proper preparation before squint surgery ensures a smoother operation, quicker recovery, and better visual outcomes — especially since it often involves children or complex eye muscle adjustments.

📋 1. Pre-Surgical Eye Examination

Your ophthalmologist will conduct detailed tests to evaluate:

• Type & degree of squint (measured in prism diopters)
• Visual acuity in both eyes
• Refraction test (to assess for glasses)
• Binocular vision and depth perception
• Any presence of lazy eye (amblyopia)

👓 2. Spectacle Correction (if needed)

• Children with refractive errors (like farsightedness) may be advised to wear glasses for a few months before surgery
• Sometimes, glasses alone can partially or fully correct the squint

🧸 3. Amblyopia Therapy (for Children)

• If one eye is weaker, patching therapy (covering the stronger eye) may be prescribed before surgery
• Strengthening the weaker eye improves post-surgical outcomes

💉 4. Medical Clearance & Lab Tests

• Routine tests like:
  • Complete blood count (CBC)
  • Blood sugar (especially in adults)
  • ECG or chest X-ray (if required)
• Anesthesia fitness clearance (especially for general anesthesia in children)

🚫 5. Stop Certain Medications

• Blood thinners like aspirin or warfarin may need to be stopped under medical supervision
• Inform your doctor about all current medications and allergies

🕒 6. Fasting Guidelines

• If under general anesthesia, fasting is required:
  • 6 hours for solid food
  • 2 hours for clear liquids
• This is crucial for safe anesthesia administration

👨‍⚕️ 7. Pre-Surgery Counselling

• Discussion on:
  • What to expect during and after surgery
  • Possibility of needing a second surgery (in complex cases)
  • Recovery time and restrictions

👜 8. Pack Essentials for Surgery Day

• Valid ID, consent forms, past reports
• Comfortable clothing (avoid tight collars)
• For children: favorite toy/book to ease anxiety

🔑 Quick Tips:

Procedure

Squint surgery involves adjusting the eye muscles to correct misalignment. It’s typically a safe and effective outpatient procedure performed under general anesthesia (for children) or local anesthesia (for adults).

👁️ Step-by-Step Surgical Procedure

✅ 1. Anesthesia Administration

• Children: General anesthesia (asleep during surgery)
• Adults: Often done under local anesthesia with sedation

🔍 2. Eye Exposure

• The eye is held open gently with a speculum
• The eyeball is not removed — only surface muscles are operated on

🧵 3. Muscle Adjustment

Depending on the squint type, the surgeon will either:

🔹 Weaken an Overacting Muscle (Recession)

• Muscle is detached from its insertion on the eyeball and reattached further back
• This reduces its pulling strength

🔹 Strengthen a Weak Muscle (Resection)

• A small section of the muscle is removed (shortened), then reattached to its original position
• This increases its pulling power

🔹 Transposition (if needed)

• Muscles may be moved to new positions to correct vertical or torsional squints

🪡 4. Suturing

• Muscles are secured using fine absorbable or non-absorbable sutures
• In some advanced centers, adjustable sutures are used (mostly in adults), allowing post-op fine-tuning

🩹 5. Eye Closure and Recovery

• No stitches on the skin — the surgery is done on the white of the eye (conjunctiva)
• Eye is covered with a protective pad
• Patients are monitored post-surgery for 1–2 hours before discharge

Success Rates

Squint surgery is generally highly successful, especially when performed at specialized eye centers with trained pediatric or strabismus surgeons.

📊 Overall Success Rate

• 70% to 90% of patients achieve significant improvement in eye alignment after a single surgery
• In some cases, especially complex or long-standing squints, a second surgery may be required for optimal results

🎯 Success Depends On:

👁️ Single vs. Multiple Surgeries

• 70–80% require only one surgery
• 15–30% may need additional adjustment or re-surgery, especially if:
  • The squint is large or vertical
  • There’s a neurological or congenital cause
  • Vision therapy is not followed post-op

FAQs

1. Is squint surgery painful?

👨‍⚕️ Answer:
No, the surgery itself is not painful as it is done under general or local anesthesia. Post-surgery, patients may feel mild discomfort, irritation, or a gritty sensation, which usually resolves in a few days.

❓ 2. Will my vision improve after squint surgery?

👨‍⚕️ Answer:
The surgery primarily improves eye alignment, not visual acuity. However, in children, aligning the eyes early can help develop binocular vision. Adults may require glasses or further vision therapy if needed.

❓ 3. Is the surgery done on one or both eyes?

👨‍⚕️ Answer:
It depends on the severity and type of squint. Sometimes, both eyes need to be operated on—even if only one appears misaligned—for better balance and results.

❓ 4. How long is the recovery period?

👨‍⚕️ Answer:
Most patients return to normal activities within 3–5 days, but full recovery and stabilization of alignment can take 4–6 weeks. Children may return to school in under a week.

❓ 5. Are there any risks involved?

👨‍⚕️ Answer:
Like all surgeries, there are minor risks, such as:

• Redness or swelling
• Infection (rare)
• Under- or over-correction
• Need for re-surgery

However, serious complications are very rare when done by experienced surgeons.

❓ 6. Can squint come back after surgery?

👨‍⚕️ Answer:
Yes, especially in complex, congenital, or untreated cases. Around 15–30% of patients may need additional surgery or vision therapy later. Regular follow-up helps in early detection.

❓ 7. Is squint surgery only cosmetic?

👨‍⚕️ Answer:
No. While it improves cosmetic appearance, it also helps improve:

• Depth perception
• Binocular vision
• Psychological confidence, especially in children

❓ 8. At what age should squint be treated in children?

👨‍⚕️ Answer:
Ideally between 6 months and 5 years. Early treatment gives the best chance for permanent correction and good visual development.

❓ 9. Will glasses still be needed after surgery?

👨‍⚕️ Answer:
Yes, in some cases. Squint correction surgery addresses muscle alignment, not refractive errors. Glasses or patching may still be necessary for best results.

❓ 10. Can adults benefit from squint surgery?

👨‍⚕️ Answer:
Absolutely. Adults can undergo surgery for both cosmetic improvement and, in some cases, to reduce double vision or eye strain.