Time to say goodbye to double vision
Get out of prism glasses with surgery
London Squint Clinic
Before deciding to have surgery, I was understandably nervous and uncertain. Eye surgery is not something you take lightly, but any concerns I had qui...
Before deciding to have surgery, I was understandably nervous and uncertain. Eye surgery is not something you take lightly, but any concerns I had quickly disappeared after meeting Dr. Ali and his team. From my very first consultation, they were professional, reassuring and took the time to answer every question I had, leaving me feeling completely confident that I was in the best possible hands. The surgery itself was far more straightforward than I had imagined. In my case, everything went smoothly, and I was able to leave the clinic early that same afternoon. The results have exceeded my expectations. For many years I had been very self-conscious about my squint, particularly whenever photographs were taken. It was something I was always aware of and often tried to hide. Since the surgery, that self-consciousness has gone. It has genuinely changed how I feel about having my photograph taken and has given me a confidence I didn't expect to regain. What has impressed me just as much as the surgery itself has been the aftercare. Dr. Ali's support throughout my recovery was exceptional. Whenever I had a question or concern during the healing process, he responded incredibly quickly and was always reassuring. Knowing that level of support was there made the recovery much easier. I cannot thank Dr. Ali and everyone at the London Squint Clinic enough. My experience from start to finish has been outstanding, and I would not hesitate to recommend them to anyone considering squint surgery.
Absolutely amazing service from start to finish! Having had multiple previous surgery from a little child and countless years of trying through the NH...
Absolutely amazing service from start to finish! Having had multiple previous surgery from a little child and countless years of trying through the NHS and private for further review with always a negative outcome. I finally took the plunge to contact Dr Ali & team and completely amazed by the results! The customer service, kindness and support I’ve received was second to none and I couldn’t have wished for a better outcome! Even with having to move my surgery date due to illness, nothing was too much trouble and it was resolved extremely quickly with a new date! I can’t thank the team enough especially DR Ali for the compassion and outcome! Highly recommended!
I recently had squint surgery at the London Squint Clinic and I'm extremely happy with the results. From the first consultation through to the su...
I recently had squint surgery at the London Squint Clinic and I'm extremely happy with the results. From the first consultation through to the surgery and aftercare, the team were professional, reassuring and supportive. Mr Ali explained everything clearly, which made me feel confident and comfortable throughout the whole process. The surgery went smoothly, and the care I received afterwards was excellent. I am really pleased with the outcome and grateful for the difference it has made. I would highly recommend The London Squint Clinic to anyone considering going ahead with surgery.
I am so pleased with the result of my surgery, and would highly recommend Mr Ali. The whole process end to end was really smooth, and I felt very supp...
I am so pleased with the result of my surgery, and would highly recommend Mr Ali. The whole process end to end was really smooth, and I felt very supported and listened to throughout. My quality of life has improved hugely - thank you!
I honestly don’t know how to write this review without sounding dramatic but I think this is one of those times where dramatic is completely justifi...
I honestly don’t know how to write this review without sounding dramatic but I think this is one of those times where dramatic is completely justified. I first booked an appointment with Mr Ali at the London Squint Clinic in May 2025. At that point, I had already lived with eye problems for most of my life. My first eye turn was when I was around 4 years old and since then I feel like I have done the full strabismus bingo card: corrective surgery as a child, glasses, patches, Botox, atropine drops, the lot. Before seeing Mr Ali, I had been told on the NHS that nothing could really be done and that surgery was too risky. I was also honestly told that it was in my head by some doctors and that I needed to focus or I was making it worse than it is. I accepted that for a long time because when you are told something is not possible, you believe it. But knowing the outcome I have had now, I genuinely wish I had explored it sooner. I came to Mr Ali knowing that my case was not simple. He operated in June on one eye, then another operation in September on the other eye. 2 months ago I had my third and final surgery with mr Ali - That might seem a lot but we were cautious of over correction because at this point I was already chuffed with the outcome. at one point my eyes looked beautifully straight, but I still had double vision when looking to the left. Anything to the left of my central vision was double and It affected so much more than people realise. I couldn’t drive properly with double vision. If I had one eye patched, even if technically I could legally drive, I didn’t feel safe or confident. I would bump the curb and scratch my tyres because my judgement just wasn’t right. I now drive confidently. That alone has changed my life. I can now sit and have a conversation with someone on my left. I can look someone in the eye without having to alternate between which eye has focus. I don’t have to overthink where I am looking or whether the other person can tell. I don’t feel like I am constantly managing my vision and my face at the same time. Before this, I had tried Botox injections and had drooping eyelids. I had a haemorrhage in my eye that lasted over a month. It is exhausting. It makes you want to hide. What I appreciated from the beginning was Mr Ali’s honesty. He never overpromised. He explained things clearly. I always felt informed and respected. I think he understood that I knew things were complicated, and I appreciated his approach of: we will do our absolute best and I knew he meant it. I can honestly say the result has changed my life. Mr Ali’s post-operative care is unlike anything I have experienced before. He is reassuring, calm and goes above and beyond. I am also one of those rare people who seems to be allergic to absolutely everything, especially eye drops, because apparently I like to keep medical professionals on their toes. So thank you for dealing with me being so complicated again on top of it all. The impact has been far bigger than cosmetic. I don’t feel shy in groups now. I don’t hide from photographs, video calls or people looking at me. My confidence at work has improved. I contribute more. I don’t shy away from being on camera or being seen. For anyone who has lived with a squint, double vision, or a misalignment of the eyes in any way you will understand that this is not vanity. It affects how you move through the world. It affects driving, conversations, eye contact, confidence, work, social situations and whether you feel comfortable being noticed. Mr Ali has given me something I honestly did not expect to get - ever. Thank you, Mr Ali, for your skill and for changing my life. Photos showing different stages of my eyes before and after mr Ali



Time to say goodbye to double vision
Get out of prism glasses with surgery
Reclaim single vision
Imagine being able to wake up and see everything clear and single. No more double objects, blur, difficulty judging distances, tackling steps, problems reading. No more confusion from things on the side appearing in front of you. We take single vision for granted. Only people with double vision appreciate what it would mean to get that back.


Remember the life you used to have
Get back to enjoying all the things which double vision took away: reading for pleasure, outdoor activities, sports, driving. Double vision doesn’t just affect your eyes, it constricts your life. And you get used to it just because you have to. But with double vision surgery you can once more live the life you used to enjoy.
Throw away your prism glasses
Prism glasses can be good for some people. But for others they are just a pain. They don’t fix the problem in different directions or distances. They don’t work great for when you are moving about. Costly, thick, heavy and always need updating. And once you are in them, you are trapped. Unless you have double vision surgery. Most of our patients can get rid of their prism glasses after surgery and return to how they used to see before: no-prism glasses, contact lenses, or nothing.


DOUBLE VISION SURGERY OFFERS HOPE
When our patients are first told that they can have double vision surgery, it is often a very emotional moment. Finally they have hope that their double vision will come to an end and they can get back to a normal life.
Weekend & Evening Video Consultations Available
Reclaim clear vision and a vibrant life
Imagine being able to wake yup and see everything clear and single. No more double of objects, blur, difficulty judging distances, tackling steps, problems reading. No more confusion from things on the side appearing straight ahead. We take single vision for granted. Only people with double vision appreciate what it would mean to get that back.

Remember the life you used to have
Get back to enjoying all the things which double vision took away: reading for pleasure, outdoor activities, sports, driving. Double vision doesn’t just affect your eyes, it constricts your life. And you just get used to it because you have to. But with double vision surgery you can once more live the life you used to enjoy.

Throw away your prism glasses
Prism glasses can be good for some people. But for others they are just a pain. They don’t fix the problem in different directions or distances. They don’t work great for when you are moving about. Costly, thick, heavy and always need updating. And once you are in them, you are trapped. Unless you have double vision surgery. Most of our patients can get rid of their prism glasses after surgery and return to how they used to see: no-prism glasses, contact lenses, or nothing.

DOUBLE VISION SURGERY OFFERS HOPE
When our patients are first told that they can have double vision surgery, it is often a very emotional moment. Finally they have hope that their double vision will come to an end and they can get back to a normal life.

Meet your surgeon
Mr Nadeem Ali is a world expert in the diagnosis and surgical treatment of Double Vision.
There are many eye surgeons who do mainly cataract and a bit of squint surgery on the side. There are many who do general ophthalmology for children and a bit of kids’ and adult squint surgery on the side.
But there are very few people in the world who specialise 100% in squint and double vision surgery in adults. Mr Ali does just that.
He holds the following degrees:
- MA – Triple First class (Cambridge). He was top of the year for 2 out of 3 years.
- MB BChir with distinction (Cambridge)
- MRCOphth (Royal College of Ophthalmologists, London)
- FRCSEd(Ophth) (Royal College of Surgeons, Edinburgh).
Born in the North East of England, Mr Ali attended the Royal Grammar School, Newcastle-upon-Tyne.
He studied medicine at the University of Cambridge and graduated with a Triple First Class degree.
His College, Gonville and Caius, was the leading medical college at the University and boasts alumni such as William Harvey (who discovered the circulation of the blood) and Francis Crick (who discovered DNA). During his undergraduate years, he was selected for a Summer Research Programme at Cold Spring Harbor Laboratory, New York, the labs of James Watson (the other discovered of DNA), where he studied the developing visual system with Neuroscientist Prof Hollis Cline. He also completed his undergraduate degree in Neurophysiology, conducting research with Prof Roger Carpenter, a pioneer of eye movement research.
He won 15 academic prizes and was top student of the University in medicine for two years of his course. He was also awarded the prestigious Schuldham Plate, given to the top-performing student over all academic subjects, over the three years of undergraduate study.
He completed his medical school at the University of Cambridge Clinical School, graduating with distinction.
Mr Ali completed his general Ophthalmic training in the North East of England.
He then pursued a Fellowship with Mike Clarke, a world-expert on squint and double vision, who taught him much of what he knows.
After that, he undertook a fellowship in Neuro-Ophthalmology at the National Hospital for Neurology and Neurosurgery, Queen Square wher he gained experience in complex neurological causes of double vision.
He also did a Fellowship Squint and Double Vision surgery at the world-renowned Moorfields Eye Hospital in London.
He was then uniquely privileged to undergo a further 18 months of advanced, 1:1 training in squint and double vision surgery with Mr John Lee (deceased), probably the world’s leading squint expert.
He was then one of the youngest Consultants at that time appointed to the role of Consultant Eye Surgeon at Moorfields Eye Hospital.
He worked as Consultant at Moorfields for 13 years from 2010-2023, receiving referrals of complex cases in squint and double vision from across the country.
Mr Ali has held/holds the following roles at Consultant level:
- Consultant in Squint, Neuro-Ophthalmology and Paediatric Ophthalmology, Moorfields Eye Hospital – City Road, London (2010-2014)
- Consultant in Neuro-Ophthalmology, the Royal London Hospital, London (2010-2014)
- Consultant in Squint, Neuro-Ophthalmology and Paediatric Ophthalmology, Moorfields Eye Hospital – South, London (2014-2023)
- Lead for Adult Squint, Double Vision and Neuro-Ophthalmology, Moorfields Eye Hospital – South, London (2016-2023)
- Honorary Consultant to the National Hospital for Neuro-Disability, London (2021-2023)
- Visiting Consultant in Squint Surgery, Gibraltar Health Authority (2018- present)
- Visiting Consultant in Squint Surgery, Iceland Government Health Service (2023-present)
People who do their homework choose us.
Here’s 9 reasons why.
1. The specialists
We are the UK’s only clinic exclusively for squint and double vision.
2. Ultra expertise
Mr Ali is one of just a few surgeons in the world who does nothing but squint and double vision surgery in adults. Most other squint surgeons do mainly children and adults on the side.
3. Experience
Mr Ali has 24 years of surgical experience, covering the most simple to the most complex cases.
4. Stellar patient satisfaction
Our Google reviews are unrivalled. We love our patients and they love us. Read them all here
5. Self-refer, self-pay
You don’t need a referral. Simply book a video or in-person appointment to get things started. We are a 100% self-pay clinic.
6. Short waits
We can offer your life-changing surgery within 4 weeks.
7. Advanced techniques
Squint and double vision surgery is an art as well as a science. Mr Ali continues has refined his own unique techniques to maximise safety and success.
8. Industry-leading results
Our audited success rate for alignment is >95% from our peace-of-mind surgical package.
10. VIP access to your surgeon
Our patients love that they get 24/7 access to Mr Ali by WhatsApp during your recovery. And life-long contact with him for eye advice.
An international centre of excellence
These are real locations of our recent patients.
Wherever you are in UK or the world, we can see you by video then arrange your surgery in London.


Download Our Detailed Guide
Mr Ali has written this exclusive guide for patients with double vision.
It answers the common questions that people have when considering surgery.
See the world with straighter eyes
Book your initial appointment to find out if you are suitable for life-changing double vision surgery
See the world with straighter eyes
Book your initial appointment to find out if you are suitable for life-changing eye surgery.

3 easy steps to free yourself from double vision
Living with double vision can really impact your life.
We’re here to help make that a thing of the past.


MAKE AN APPOINTMENT
You’ve suffered for years. Now’s the time to end that. Book a video or in-person appointment.


MEET YOUR SURGEON
At your appointment, Mr Ali will discuss your double vision issues and answer any questions that you have.
You’ll leave knowing if you can finally have the surgery you want.


ENJOY YOUR NEW LIFE
The number one thing we hear from our patients after surgery is:
“You have honestly changed my life.”
And the number two thing is:
“Why didn’t I have this done sooner?”
So bite the bullet and start your journey today!
Double vision surgery Frequently Asked Questions
To be a good candidate for double vision surgery, you should meet the following criteria:
- Be between 18 and 100 years old.
- Experience double vision, which means you see two images of one object.
- Or experience visual confusion, which means objects appear in the wrong place.
- You might or might not have a visible eye turn or squint.
- You might or might not have tried prism glasses, which are special glasses to help with double vision.
- You may have been denied surgery through the NHS.
- You may have been told that surgery is not an option elsewhere.
Double vision surgery aims to fix misalignment in the eyes that causes seeing two images of one object.
During the surgery, the eye muscles are adjusted to improve their alignment. This can involve tightening or loosening the muscles to correct their position. The goal is to make both eyes work together, so you see a single, clear image instead of two.
Recovery involves some rest and follow-up visits to ensure the eyes are healing properly and functioning well together.
Advantages:
- High Success Rate: 95%, meaning most patients see significant improvement.
- Quick Procedure: Usually completed in less than an hour.
Anesthesia Options: Choice of local or general anaesthesia. - Short Wait Time: Surgery can be done within a few weeks from the first consultation.
- Day Case Surgery: No overnight stay required.
Immediate Benefits: Many patients notice improvement from day 1. - Minimal Pain: Most patients experience very little discomfort afterward.
Disadvantages:
- Low Risk of Complications: Very rare, less than 1 in 1,000, but risks such as infection or adverse reactions to anaesthesia are possible.
- Temporary Discomfort: Some patients may experience mild pain, swelling, or discomfort.
- Potential Need for Further Adjustments: Not all patients achieve perfect results and may need additional procedures.
Double vision surgery is very safe, even safer than cataract surgery.
However, like any surgery, there are some risks. These include:
- Overcorrection or undercorrection, where the problem might not be fully fixed.
- The need for another surgery in about 5% of cases.
- New or ongoing double vision in about 2% of patients.
- Loss of vision, which is very rare, affecting less than 1 in 4,000 people.
- Redness or scarring on the white part of the eye.
- A slight change in the shape of the eyelid.
Overall, the risks are low, and most patients see great results.
Prism glasses bend light to correct its path, aligning images on the retina and reducing double vision by helping the brain merge them into one clear view.
Botox:
Botox injections can also alleviate double vision temporarily by relaxing eye muscles. However, Botox requires repeated treatments every few months and can worsen vision initially,
Double vision surgery offers a more stable and permanent solution.
- Book an initial video consultation to see if surgery is right for you and discuss your options.
- Get pre-surgery measurements, which can be done in London or in several locations in the UK or beyond. Sometimes, these can be taken on the day of surgery.
- Undergo the surgery as a day case, meaning you don’t stay overnight.
- Say goodbye to prism glasses and start enjoying clear vision right away!
- Attend two follow-up appointments, one in 2 weeks and another in 2 months, to check your progress and healing.
Getting your freedom back
- Freedom from prism glasses
- Freedom to drive
- Freedom to read
- Freedom to work on a computer
- Freedom to enjoy sports and hobbies
Further information on double vision
Read these articles by the London Squint Clinic team
The Diagnostic Tests Used to Measure Eye Misalignment for Surgery
Successful adult squint or double vision surgery hinges on precise diagnosis. Diagnostic tests for eye misalignment quantify deviation, assess eye muscle function, and understand eye coordination. This crucial data forms the blueprint for effective surgical planning and optimal outcomes.
Comparing Surgical Techniques for Different Types of Diplopia
Diplopia, or double vision, can be disruptive, affecting balance and depth perception. This post explores various surgical techniques for diplopia, tailored to different conditions. Discover how expert assessment leads to personalized solutions for clear, single vision.
Preparing for Your Video Consultation for Double Vision Surgery
Preparing for a video consultation for double vision surgery is crucial for a productive assessment. This guide outlines what to expect, how to prepare your medical history, and what Mr. Ali can assess remotely. Understand the next steps after your virtual appointment.
Who Is the Ideal Candidate for Adjustable Suture Eye Muscle Surgery?
Adjustable suture surgery offers a precise approach for adults with complex squint or double vision. Discover if you are the ideal candidate for this advanced eye muscle surgery, especially for revision cases or neurological conditions. Learn about suitability factors and the role of specialist expertise.
Your Initial Consultation: What to Expect When You Meet Mr. Ali
An initial consultation with Mr. Ali is a crucial 60-minute diagnostic appointment. It measures eye misalignment, determines the cause of double vision or squint, and establishes if surgery is appropriate, forming the basis of your personalized treatment plan. Understand what to expect and how to prepare for this specialist evaluation.
The ‘Fine-Tuning’ Process: What Happens During Post-Operative Suture Adjustment?
Post-operative suture adjustment is a crucial refinement after squint surgery, allowing precise corrections for optimal eye alignment. This 'fine-tuning' process ensures single vision and cosmetic symmetry, enhancing life-changing outcomes for patients. Learn how expert precision matters.
Questions to Ask Your Surgeon During a Double Vision Surgery Consultation
A consultation for double vision (diplopia) surgery is a discussion with an ophthalmic surgeon to determine if eye muscle surgery is right for you. This meeting is your opportunity to understand the procedure, set realistic expectations, and build confidence in your specialist. Preparing a list of questions ensures all your concerns are addressed.
A Detailed Look at Adjustable Suture Surgery for Diplopia
Adjustable suture surgery is an advanced eye muscle technique for precise correction of adult double vision (diplopia). It involves reattaching an eye muscle with an adjustable knot, allowing fine-tuning for optimal alignment and lasting clarity. Discover how this procedure can restore single vision.
Why a Surgeon’s Fellowship in Neuro-Ophthalmology Matters for Your Outcome
A neuro-ophthalmology fellowship signifies intensive, post-residency subspecialist training focused on the intricate relationship between the brain, nerves, and eyes. This expertise is crucial for diagnosing and managing complex visual problems like persistent double vision, ensuring more precise diagnoses and effective treatment plans for patients. It significantly enhances surgical outcomes.
Is Repeat Double Vision Surgery Possible After a Previous Failed Operation?
Yes, repeat double vision surgery is possible after a previous failed operation. This specialized revision surgery can restore clear, single vision and significantly improve quality of life for adults with persistent diplopia. Discover how expert assessment and advanced techniques can help.
How to Choose the Best Specialist for Adult Diplopia: A Patient’s Checklist
Finding the best specialist for adult diplopia is crucial for effective treatment and regaining clear vision. This guide provides a comprehensive patient checklist to help you identify a world-class surgeon. Discover what defines expert care and how to achieve life-changing single vision.
Understanding Success Rates: What a 95% Alignment Outcome Means for Patients
A 95% squint surgery success rate means most patients achieve stable eye alignment and improved vision from a single operation. This outcome reflects reduced double vision and restored comfortable binocular vision. Discover how surgeon expertise drives these high success rates and what to expect post-surgery.
Can Surgery Permanently Fix Double Vision in Adults?
For most adults, specialised surgery offers a lasting solution to double vision (diplopia). This procedure aims to realign the eyes, restoring comfortable single vision and eliminating functional difficulties. Discover how surgery can permanently fix double vision and improve your quality of life.
Adult Double Vision Surgery Explained: Techniques, Success Rates, and What to Expect
Adult double vision surgery, also known as diplopia or strabismus surgery, corrects eye muscle misalignment to restore comfortable, single binocular vision. This procedure adjusts extraocular muscles, allowing the brain to fuse images into one. Discover techniques, success rates, and recovery.
Correcting Double Vision Caused by Cranial Nerve Palsies (3rd, 4th, 6th)
Cranial nerve palsy double vision (diplopia) is debilitating, affecting daily life and independence. This post explains how damaged nerves cause eye misalignment and details specialist surgical and non-surgical treatments available to correct 3rd, 4th, and 6th nerve palsies, restoring clear vision.
What Is a Hess Chart and How Does It Inform Surgical Planning?
The hess chart test is a vital diagnostic tool in ophthalmology, offering a precise graphical map of eye muscle function. It's essential for understanding the cause of double vision and informs surgical planning for adults, particularly at specialist centers like London Squint Clinic.
Post-Concussion Vision Problems: When is Surgery Needed for Double Vision?
Double vision after concussion is a disorienting symptom. This article explains the causes of post-traumatic diplopia, outlines non-surgical treatments, and clarifies when eye muscle surgery becomes the most effective solution for restoring single vision.
How Surgeons Use Prism Measurement to Quantify Double Vision
A precise prism measurement for double vision quantifies eye misalignment to inform an effective treatment plan. This article covers diagnostic tools and interpretation, translating measurements into a surgical strategy for restoring single, comfortable vision.
How Thyroid Eye Disease Leads to Double Vision and Surgical Solutions
Thyroid eye disease double vision, or Graves' ophthalmopathy, causes eye muscle inflammation and misalignment. This article details the mechanisms behind diplopia, its medical management, and expert surgical solutions to restore clear, single vision and improve daily function.
Diagnosing Surgical Diplopia: What to Expect at Your Specialist Consultation
A specialist diplopia diagnosis is the crucial first step to understanding if surgery can restore clear vision. This article outlines what to expect during your assessment, guiding you through the diagnostic process for surgical diplopia and towards regaining visual clarity and independence.
What Causes Adult Double Vision That Requires Surgery?
Adult double vision, or diplopia, often requires surgery due to issues with eye nerves, muscles, or brain pathways. A specialist assessment is crucial for diagnosing the root cause and developing a treatment plan to restore single, comfortable vision.
The Psychological Toll of Eye Misalignment: Anxiety, Confidence, and Social Interaction
The psychological effects of strabismus extend beyond vision, impacting mental health, confidence, and social interaction. Eye misalignment can cause anxiety, low self-esteem, and depression. Discover how surgical treatment can restore emotional well-being and quality of life.
What Are Faden Procedures in Complex Double Vision Surgery?
The faden procedure, or posterior fixation suture, is a specialist squint surgery for complex double vision and eye misalignment. It selectively weakens muscle action in specific gaze directions, offering precise correction. Learn how this advanced technique can help achieve single vision.
How Diplopia Impairs Daily Tasks like Driving, Reading, and Working
Diplopia significantly impairs daily tasks like driving, reading, and working, compromising safety and independence. Double vision affects depth perception and reaction time, making many activities hazardous. Specialist surgery can restore clear vision, helping you reclaim your life.
Struggling With Double Vision? Find Out What You Can Do About It
Double vision can affect all aspects of daily life. This guide covers causes, treatments, and surgery. Download now to make an informed choice
Struggling With Double Vision? Find Out What You Can Do About It
Double vision can affect all aspects of daily life. This guide covers causes, treatments, and surgery. Download now to make an informed choice


Video clinic for new patients
Wednesday evenings
Sunday mornings
Face-to-face clinic for new patients
Saturdays all day

Hello, I’m Nadeem Ali
I’m one of the few eye surgeons in the world with 100% focus on Squint and Double Vision Surgery.
I have 24 years of eye surgery experience, and worked for 13 years as a Consultant at London’s renowned Moorfields Eye Hospital.
In 2023, I left the NHS to focus fully on treating patients from across the world at the London Squint Clinic. You can read more about me here.
There’s lots of information on the website about: squint surgery, double vision surgery and our pricing.
The most rewarding part of my job is hearing patients tell me how squint or double vision surgery has changed their lives. You can hear these stories here.
Mr Nadeem Ali
MA MB BChir MRCOphth FRCSEd(Ophth)






























