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


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

As we age, the eye’s natural lens becomes cloudy. This is called a cataract.

Cataracts eventually occur in everyone. The majority of cataract surgeries are undertaken for patients in their 60’s and 70’s, but surgery can be performed sooner or later than this.

Cataracts produce changes in the vision which patients perceive as the following common symptoms:

  • Blurred or foggy vision
  • Difficulty seeing the writing on television or the action in a sporting fixture
  • Difficulty reading, or needing brighter lights to read
  • Shadowing or ghosting of the vision
  • Glare or dazzle from lights, such as when driving at night
  • Difficulty recognising people’s faces
  • Double vision, or multiple images, from one eye

There is published research that suggests an adverse effect of cataract on the body’s circadian rhythm, sleep and mood centres. This may contribute to disrupted sleep and altered mood, including depressive-type symptoms in some patients. These studies also provide some evidence that cataract surgery may contribute to improvement in quality of sleep and depressive symptoms in certain patients.

Cataract can cause other symptoms as well as those listed above. A thorough examination will help determine the eye’s overall health as well as the best treatment options for each patient.

A cataract occurs naturally as we get wiser (…or older).

However, it is possible for a cataract to occur earlier than usual as a result of ocular inflammation, diabetes, taking certain medicines, ocular trauma, familial tendency, and sometimes just by chance.

A thorough examination will help determine the eye’s overall health as well as the best treatment options for each patient.

Traditional cataract surgery

With traditional cataract surgery, the natural lens is removed and replaced with a clear plastic lens. Spectacles are then required to see clearly at other distances. This is the treatment you will have with the NHS.

Refractive Cataract Surgery

If you would like to see at all distances without glasses, then Refractive Cataract Surgery is the best option for you.

After cataract surgery, we can replace your natural lens with a monofocal lens implant. This provides good distance vision and a greater ability to read without glasses.

While many patients are candidates for multifocal lens implants, this is not the case for all patients. We will discuss your particular requirements and suitability in detail at your consultation.

Why should I have my cataracts removed privately?

With NHS cataract surgery, you will usually be offered monofocal lenses, which have a single point of focus. This means the lens will be fixed for either near or distance vision, but not both.

At iLase you can have refractive cataract surgery where you choose from a range of lenses that enable the eyes to focus on both near and distant objects.

Why did I develop a cataract?

Usually, a cataract develops naturally with the passage of time. It is possible to develop a cataract earlier or later than average, and they can sometimes be associated with other medical conditions.

Is my cataract ready to be removed?

A cataract does not need to be ‘ripe’ for removal. Cataract surgery can be an appropriate treatment when the symptoms are sufficiently troublesome for you, and when you are willing to consider ways to improve your vision.

Will I have to wear glasses after my cataract is removed?

Not necessarily. This depends on the type of lens implant you choose to receive. With a monofocal lens, you will need glasses for reading.

Multifocal lens implants provide a greater degree of freedom from glasses than monofocal lens implants, including a greater ability to read without glasses.

I’ve always been near-sighted and able to read without glasses. Will this still be the case after my cataract surgery?

Not if you have a monofocal lens implanted to give you distance vision. A monofocal lens cannot focus the vision at different points in front of your eyes so you will need to wear glasses after the surgery.

A multifocal lens, however, can provide distance and near vision without the need for glasses, and so maintains the advantage of near-sight while also providing good distance vision at the same time.

I have astigmatism. Can cataract surgery make this worse?

Yes, that can happen. If your pre-existing astigmatism is not considered in detail before surgery is performed, then it is possible for astigmatism to increase as a result of the operation. This may lead to blurred vision and the need to use glasses all of the time.

However, with a thorough set of pre-operative tests and careful planning, your astigmatism can actually be treated as part of your cataract surgery. This could make a great difference to the result of your surgery and optimise your visual outcome.

Premium lens implants can combine correction of astigmatism with multifocality, providing even greater independence from glasses after surgery.

Is it true that cataract surgery is not worth doing if I have macular degeneration?

No, this is not true. Cataract surgery can allow more light to enter the eye leading to brighter vision and the possibility of improved clarity.

It is not possible to predict how much benefit may be gained after the cataract operation, but the presence of macular degeneration should not prevent you from discussing the possible benefits of cataract surgery with an ophthalmologist.

I’ve had laser vision correction in the past. Does this cause any difficulties when I have my cataract treated, and how can these be addressed?

The surgery is done in the same way as for other patients.

However, the preoperative calculations to select the correct strength of the lens implant are less accurate in eye that have undergone prior vision correction surgery such as LASIK, PRK, SMILE and others.

This means that patients are significantly more likely to have a spectacle prescription after surgery and need to use glasses most or all of the time.

Prof Muhtaseb uses the most up-to-date technology to measure the eyes and gather data preoperatively.

He then utilises the most effective lens calculation methods, based on the latest published evidence, to calculate the strength of lens required for each eye.

Prof Muhtaseb continuously monitors the outcomes of these cases and has presented the results of his surgeries for such patients at international meetings.

If you have previously undergone a vision correction procedure, it is essential that you discuss the method of lens calculation with your surgeon.

I’ve had laser vision correction in the past. Can I still have a multifocal IOL when my cataract is removed?

Yes, it is still possible to use a multifocal IOL if you’ve had prior vision correction surgery. The caveat is that the eye examination must be entirely normal with no abnormal features of the cornea or other parts of the eye.

Prof Muhtaseb will discuss your options in detail with you at the consultation.

Astigmatism: A Tale of Two Patients

Patient 1 received cataract surgery with another surgeon at a different clinic. They had 1.75 dioptres of astigmatism before cataract surgery but left with 4 dioptres after cataract surgery. The patient was left with poor vision unless they wore glasses with a strong astigmatic prescription at all times.

The patient came to iLase for help. Prof Muhtaseb informed the patient of the benefits and risks of the various surgical means that could help to correct residual astigmatism.

Patient 2 consulted Prof Muhtaseb about cataracts. They had 1 dioptre of astigmatism in their glasses. Prof Muhtaseb determined the likely outcome with and without a toric lens implant using the latest technology for measuring the eye and calculating the best lens implant.

Prof Muhtaseb took into account the amount and direction of the patient’s astigmatism and the effect of surgery on the corneal shape. With these measurements, Prof Muhtaseb was able to recommend a toric lens implant with 2.75 dioptres of toric astigmatic correction.

The patient’s postoperative result was excellent. They had zero astigmatism in each eye and sharply focused distance vision.

These cases illustrate the importance of accounting for the magnitude and direction of astigmatism before surgery. Measuring the eye with very accurate devices, understanding the effect of surgery on the eye, using the most accurate formula to model the postoperative outcome, and tailoring the lens implant choice to each individual eye is essential.

Every eye is different, and each patient should expect a tailored surgical plan for each eye – this is Prof Muhtaseb’s standard of care.


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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:


In this video, Prof Mohammed Muhtaseb demonstrates how the surgery will be carried out by using a visual demonstration


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 cataract surgery by reading the links below

The NHS provides an overview of cataracts . Click here for more information.

If you know you have cataracts, you may be interested in how cataract surgery works. This NHS overview will provide you with that information. Click here for more on this.

Did you know that driving with cataracts could carry prosecution if your vision is not up to the legal standards required for driving. Click here for more information.

Diabetes can increase your risk of developing cataracts later on in life, as well as other risk factors. Click here for more information.

The use of femtosecond lasers within cataract surgery is becoming more common. Femtosecond lasers are used to minimise the use of surgical blades and needles providing precision and micron accuracy. Click here to read more about cataract surgery in London.

There is a 98 – 99% likelihood of undergoing laser assisted cataract surgery without complications that may permanently affect your best possible vision. Click here to read more about cataract surgery in Brisbane.

Lifestyle cataract surgery is a safe and effective treatment for many middle-aged patients with high refractive errors. Most patients with cataract are suitable to have it removed. Yet, there are other factors to consider before entering the surgical theatre. Click here to read more about cataract surgery in Melbourne.

Cataracts often develop slowly and painlessly. They can affect your vision and ability to do day-to-day tasks without you realising it. We can sometimes correct this gradual decline in sight with an up to date pair of glasses. More often than not, the glasses prescription continue to change, and the new pair of glasses is very soon obsolete. Click here to read more about cataract surgery in London.


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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.

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