In this video, Prof Mohammed Muhtaseb explains what you need to know about keratoconus


In these toggles we explain what you need to know about keratoconus

Keratoconus usually affects both eyes, although at differing points of onset and rates of progression.

In most people, keratoconus begins during their teenage years and progresses at varying rates until stabilising in their 30s or 40s.

Watch this video on keratoconus:

Keratoconus arises because of weakness in the layers of the cornea that leads to progressive thinning of the cornea.

Normal pressure within the eye causes the cornea to bulge into a cone-like shape progressively. This makes the eye more myopic and induces astigmatism (think of the cornea becoming shaped more like a rugby ball than a football). When this happens, you may notice blurring of vision and more frequent changes in spectacle prescriptions.

Normal activities, such as driving and reading can be challenging to perform.

We can diagnose and examine keratoconus by performing a comprehensive eye examination.

The tests include:

  • Eye refraction
  • Slit-lamp examination
  • Keratometry
  • Computerised corneal mapping

Treatment of keratoconus is aimed at stabilising corneal shape and improving vision.

The correct treatment for your eyes depends on many factors.

A full consultation with Prof Muhtaseb will be required to establish the precise clinical need and most appropriate care plan to produce the best outcome.

Glasses and contact lenses

Keratoconus is typically treated with contact lenses to improve vision. A proper lens fit is crucial to obtain adequate vision and wearing comfort. Poorly fitting or outdated contact lenses can be uncomfortable and lead to significant discomfort, corneal abrasions, scarring or infection.

If traditional methods aren’t possible, the interventions described below are successful in a high proportion of patients.

Corneal Collagen Crosslinking (CXL)

When the corneal shape is only mildly affected in early keratoconus, and the vision is still good, CXL can slow down or halt progressive distortion of the cornea by increasing its strength. It may also be possible to perform CXL in more advanced cases of keratoconus if the cornea is not too thin and the best corrected vision is still reasonable.

Watch this video on the Cross Linking:

INTACS (IntraCorneal Rings)

INTACS inserts are clear, thin prescription inserts placed in the periphery of the cornea during a brief procedure. INTACS inserts reshape the curvature of the cornea from within.

Intrastromal Corneal Ring Segments (ICRS)

When the corneal shape is more distorted, and the vision is reduced, ICRS can reshape the cornea and restore vision by improving the chance of success with a contact lens.

Watch this video on the Intrastromal Corneal Ring Segments (ICRS):

Implantable Collamer Lens (ICL)

When the corneal shape is stable, corrected vision with glasses is good, and there is a desire to reduce dependence on glasses, then ICL phakic lens implantation can provide functional visual rehabilitation. NB: this is an off-label treatment.

Combining treatments


In some cases, there is a need to reshape the cornea and increase corneal strength. This produces a normalisation of corneal shape that is long-lasting and stable.

Additional ICL

When the cornea has undergone reshaping and become stable, ICL implantation can complete the visual rehabilitation by improving functional vision.

Corneal transplantation

Although keratoconus rarely results in blindness, 20% of all patients may at some time need to undergo a corneal transplant if the condition is left untreated. This can be either because of corneal scarring that prevents useful vision or because of intolerable side effects related to the use of contact lenses.

A corneal transplant, either full- or partial-thickness, can restore corneal clarity and improve vision.

However, corneal transplantation is a major undertaking with prolonged recovery time. Although the final result is often favourable in keratoconus, it should be considered a last resort.

Why have I developed keratoconus?

Keratoconus can be seen in isolation, or it may be associated with some medical conditions such as asthma, eczma, hay fever, Down syndrome, and others

Can keratoconus be cured?

No, keratoconus cannot be cured in terms of reversing the corneal changes. However, collagen cross-linking can strengthen the cornea and slow down that changes of keratoconus.

What is the best way to improve my vision if I have keratoconus?

Vision can be improved by using glasses, but if these don’t work then a specialist contact lens specially designed to fit over a conical cornea may provide a good improvement in vision.

Will keratoconus continue to get worse over my lifetime?

No, keratoconus generally stabilises by the time a patient enters their 40’s. However, the corneal changes that can occur in the meantime may be quite severe and cause a serious reduction in vision.

Therefore, it is important to seek a consultation with a consultant ophthalmologist with a special interest in keratoconus for advice on possible treatment options.


We are proud to be associated with top quality private medical insurance

Discover the number one mistake patients make when choosing cataract surgery

Most people have cataract surgery without knowing about all the options they actually have surrounding cataract surgery. Unfortunately, most people only find this out after having cataract surgery. The information in this Wales Cataract Guide could save you frustration and worry. Simply click the button below to give us your email and we’ll send you this life changing guide:


If you can see yourself below, then we can help you

You’re over 45 and would love to read again without glasses

Unfortunately, reading glasses or varifocals get in the way of many of the things you most enjoy. Yes, spectacles help, but they are annoying little appendages that you lose or must clean to see clearly.

If you feel annoyed, anxious and limited by reading glasses or varifocal spectacles, we can help. Don’t let your favourite hobbies become tiring chores.

Be free from reading specs for good. Experience the liberation from squinting and headaches that you might have already begun to accept as part of life.

Instead, look forward to enjoying everything that your vision has to offer. Whether you enjoy reading, gardening, or the great outdoors, everything looks better when your eyes see as young as you feel.

Get a new lease on life. Contact us today and take the first step towards a better life.

Your vision is yellowing, duller, and cataracts are forming. You feel like your eyes are letting you down

The effect on your life can vary from being slightly frustrating, through to significantly affecting your ability to function independently, or even causing a devastating reduction in vision.

Before you developed cataracts, you were living a full life. You may enjoy the outdoors, have indoor hobbies or enjoy travelling. Or, perhaps you have finished working and are now taking the time to enjoy everything you may have missed when you were busy making a living.

Sadly, your eyes now dull the shine of life’s beautiful landscape. The trees, the flowers and even the sky don’t seem as bright as they used to look.

Get your life back without the compromise. Experience what life used to look like. Even better, if you’ve worn glasses or contact lenses, discover the incredible once-in-a-lifetime opportunity that modern cataract surgery affords.


We treat patients from all across Wales

“I would like to thank you most sincerely for the laser surgery you performed to improve my eyesight. It really has improved the quality of my life and I feel like a new person.”

R M, Refractive Surgery

“I was given a choice of lenses and detailed information before making my decision. I am now able to drive and read without glasses. It was entirely painless and the care I received before and after the procedures was excellent.”

Mrs. B R, Intraocular Lens

“I was very impressed with the preop eye assessment and the consultation by Mr Muhtaseb explaining the options properly, sensibly and in detail focusing on my individual situation. Surgery (PRK) went well, and the results are excellent.”

Dr. C E, Laser Refractive Surgery

“My vision is really clear. I easily read the Sunday paper without glasses the day after my surgery.”

M B, Lens Exchange

“Today I walked into work, enjoying seeing birds (I hadn’t realised how few I’d been seeing). The cloud to my left eye has gone, and I have been able to read, type, teach without needing my glasses once.”

Mrs. C, Cataract surgery with multifocal lens implant

“Thank you so much for your kind and attentive care of my eyesight. Wonderful work! It is now a treat to have good binocular sight again!”

Dr. C, Cataract surgery

“I am just sending you this message to say that my optician seemed amazed at how well I am able to see and was very happy with everything. Thank you so much. I am really thrilled!”

Mrs. E, Cataract surgery

“Mr T. called and asked me to pass a message to yourself stating that he had a marvellous experience with his visit and wanted to thank you very much for your time this morning. He said you were a proper gentleman and that he thought very highly of you.”

Mr T’s hospital secretary, Cataract surgery

“A very grateful thank you to you and your team for the operations that have enhanced my sight so much. It is a wonderful feeling to have my confidence back both in walking and driving”

Mrs. F L, Cornea

“Many thanks to ‘The No. 1 Medic’.”

Dr. A E, Intraocular Lens

“Thank you so much, you’ve changed my life forever.”


“Mr Mutaseb and his team were very professional , friendly and reassuring and held a no hassle policy on having to follow through with any procedure for laser correction. The procedure could not have run smoother and the after care was excellent.”


“I’m absolutely delighted with the vision in my eye following cataract surgery. The only problem is that I can no longer hit the golf ball out of sight!”

Dr. R, Cataract surgery

“Thank you for fixing my left eye.”

Mr. I, Cataract surgery

“Thank you so much for the care and attention you gave me during my cataract operation. Much appreciated.
You are the best. Thank you.”


Mrs. W, Cataract surgery

“Thank you for the care, help and being wonderful.”

Mrs. W, Cataract surgery

“I am very happy with Mr Muhtaseb’s professional, detailed and careful approach to my surgery. I have had successful surgery and am very happy with the result. This has been a life changing surgery for me.”

Professor H J, Refractive Surgery

“Thank you for all that you have done. I would not have gone through it without the complete trust I have in you. Thanks again.”

Mrs. S G, Multifocal Intraocular Lens

“It’s fantastic. I feel like a new person.”

D R, Refractive Lens Exchange

“Thank you for taking such good care of me during my LASIK surgery – I was terrified! I am so pleased with the outcome, which was pretty much instant – it has made such a difference to my life not having to wear glasses all the time.”


“I would like to thank you for operating to remove my cataracts in both my eyes. It is the first time in my life that I’m able to see without glasses or contact lenses. I’ve been short-sighted since I was a child when I used to sit at the front of the class in school to see the blackboard. Once again thank you, I’m so grateful to you.”

Mrs. W, Cataract surgery

“I reviewed Mrs A in my clinic today, where she tells me she is extremely grateful to you for her recent right cataract surgery. She is absolutely delighted with the result, although very disappointed that she is now able to see the wrinkles in the mirror!”

Mrs A’s referring doctor , Cataract surgery

“I would like to take this opportunity to thank you and your surgical staff for making my life so much better after my two cataract operations. It has meant a massive change to my life, both physically and mentally. It is literally like a massive cloud has been lifted from my life and taken me back years.”

Mr. B, Cataract surgery

“Many thanks to you and your team for all the kindness, care and expertise shown to me when having my cataracts removed. It is lovely to have a new lease of life.”

Mrs. R B, Cataracts

“I can’t thank you enough for the gift your ability as a surgeon has given me. I am like a child with a wonderful new toy. I can see the world anew.”

Mrs. A D, Refractive Lens Exchange

“I’m amazed at how much I can see.”

C H, Multifocal Lens

“I made my highest break in years last week. It was 137!”

Anonymous, Multifocal Piggyback Lens

“Thank you for the amazing operations – they have made a wonderful difference. I enjoy seeing the world so well!”

Mrs. S, Cataract surgery

“Thank you for your time and patience. I haven’t that much care [afforded] to me, and you have a wonderful team around you.
Once again, big thank you.”


Mr. D, Cataract surgery

“I would like to thank you for the cataract surgery to both my eyes, which for me have been life-changing. From being barely legal to drive even with glasses, not being able to recognise faces while out walking and not being able to see the racing marks while out sailing, I have been able to consign those to history.”

Mr. A, Cataract surgery
More patient stories

We have replaced the images of real patients who provided these testimonials to protect their privacy.

Don’t let post-COVID cataract queues delay you from getting the treatment you need. Save your spot now with a virtual appointment

Meet online or over the phone with surgeon Prof Muhtaseb, and get a clear answer on your cataract surgery options from the comfort of your home. You’ll also discover the little known possibility of fixing your reading and/or distance vision at the same as you fix your cataracts. Click the button below now to book your video or telephone appointment.


Enjoy a life free from cataracts, glasses and contact lenses in three easy steps

Talk to us

Give us a call on:

073 80 80 2000 and we’ll guide you towards an initial assessment.


Meet your consultant

I’ll see you before treatment to ensure you’re a good candidate and treat you at one of my facilities in South Wales or Bristol.

Revitalise your eyes

I’ll supervise your aftercare as you begin to experience a life free of cataracts and glasses and contact lenses.


Learn more about eye conditions and eye treatments

“I’m scared”

Prof Mohammed Muhtased discusses how his patients overcome anxiety about eye surgery. Watch and book your consultation today


Educate yourself further about lens replacement by reading the links below

The NHS has compared laser eye surgery and lens replacement, and is worth a look. Click here for more information.

This 12-page guide provides you with the benefits of refractive lens exchange, as well as the risks and alternatives. Click here for more information.

Presbyopia is a condition that can make patients undergo a lens replacement – but what exactly is it? Click here for more information.


Keep up-to-date on all our latest social media activity


We are proud to be a part of these professional bodies


Prof Mohammed Muhtaseb, FRCOphth

Consultant Cornea, Cataract and Refractive Surgeon

iLase is the private practice of Consultant Ophthalmic Surgeon, Prof Mohammed Muhtaseb. Based in South Wales, he is one of the very few ophthalmologists working in the UK who is a fellowship-trained specialist in Cornea, Cataract and Refractive Surgery. He holds full specialist registration with the General Medical Council and was appointed as a Consultant in the NHS in 2006.

More about me