THE CURVE OF YOUR CORNEA IS ASYMMETRIC RESULTING IN BLURRED VISION
In these toggles we explain what you need to know about astigmatism
Astigmatism occurs when the curve of the cornea is asymmetric so that it looks more like a rugby ball than a football. This produces multiple points of light focus and results in a blurred image.
In most cases, astigmatism is a natural variation. On some occasions astigmatism may be a sign of changes in the cornea that may require further tests.
To diagnose and examine astigmatism, we will perform the following tests:
- Refraction test
- Ocular examination
- A dilated fundus examination to check the health of the eye and retina
- A special scan that precisely measures the amount of corneal astigmatism
To correct astigmatism, patients must wear glasses or contact lenses.
However, to achieve the best visual outcomes without glasses or contact lenses, astigmatism can also be corrected at the time of cataract surgery or with refractive lens exchange with a choice of toric lens implants.
The most appropriate treatment option for you will depend on several factors, such as your:
- Spectacle prescription
- Any existing eye conditions or issues
- The findings from your clinical examination
- The results of any further tests or corneal scans
Can I still have a lens replacement operation if I have astigmatism?
Yes, it is possible to correct astigmatism with a toric lens implant. This can be done with either a monofocal or multifocal lens implant.
Can cataract surgery make my astigmatism worse?
It is possible for astigmatism to increase after a cataract operation. This could result in blurred vision unless you wear glasses.
To minimise this risk, the cataract operation may be planned so that any induced change in astigmatism is kept to a minimum.
Furthermore, if the change in astigmatism is likely to be significant, then a toric lens implant may be recommended in order to optimise the visual outcome.
The tests that are performed before surgery will help your surgeon make the most appropriate recommendation.
I’ve already had a cataract operation but still have astigmatism and need to use my glasses all the time. Can this be treated?
Yes, it is possible to treat residual astigmatism.
The options include laser vision correction or a toric piggyback lens implant.
Depending on your individual circumstances, it may be possible to use a multifocal toric piggyback lens implant to treat astigmatism and provide improved reading vision without glasses.
Astigmatism: A tale of Two Patients
Patient 1 received cataract surgery with another surgeon at a different clinic. They had 2.5 dioptres of astigmatism before cataract surgery, but left with 4 dioptres after cataract surgery.
This left the patient with poor vision unless they wore glasses with a strong astigmatic prescription at all times.
The patient came to Prof Muhtaseb for help. He informed the patient of the benefits and risks of the various surgical means that could help to correct the residual astigmatism.
Patient 2 consulted Prof Muhtaseb about cataracts. She had 1 dioptre of astigmatism in her glasses. Prof Muhtaseb calculated the likely outcome with and without a toric lens implant using the latest technology for measuring the eye and calculating the best lens implant.
Taking into account the amount and direction of the astigmatism from the corneal measurements, and the effect of surgery on the corneal shape, Prof Muhtaseb recommended a toric lens implant with 2.75 dioptres of toric astigmatic correction. The patients post-operative result was excellent with 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 formulae to model the post-operative outcome, and tailoring the lens implant choice to each individual eye. 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:
WHO WE SERVE
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.
WHAT OUR PATIENTS SAY
We treat patients from all across Wales
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HOW IT WORKS
Enjoy a life free from cataracts, glasses and contact lenses in three easy steps
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.
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
When it comes to having refractive cataract surgery or refractive lens exchange, patients need to choose between the lens implant types. Learn more...
Many people worry that they could go blind from having refractive cataract surgery. Mohammed Muhtaseb addresses this risk. Learn more...
What is FLACS and how does it benefit cataract surgery patients? Discover the advantages of this procedure and how it works...
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ABOUT THE EXPERT
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.