Dr David Allamby

LASIK Blended Vision Treatment

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Our chief surgeon David Allamby performed the UK’s first Blended Vision treatments in the UK in 2003 before any other surgeon. He has led the way in correction for reading glasses for more than a decade.

To those suffering from presbyopia, the symptoms are very familiar – needing to hold objects further and further away before they come into clear focus.

Reading a paper, a mobile phone message, seeing the number of who is calling you, or reading the ingredients on a tin in the supermarket all become gradually more difficult. Eventually, your arms are not long enough! From that point on, reading glasses are required.

To correct the effects of presbyopia, initially, only a weak pair of magnifying glasses are required, for example, +1.00 dioptres. Gradually you will need a stronger and stronger pair of glasses as you pass through your 50s, progressing to +2.5 or +3 by the age of 65 to 70.

Fortunately, presbyopia correction is now available for most people. At Focus Clinic, we offer LASIK Blended Vision, which can significantly reduce or even eliminate the dependency on reading glasses.

LASIK Blended Vision allows us to correct the symptoms of presbyopia and boost clear reading vision, all using our advanced A-LASIK procedure, the same approach used for our remarkable 100% 20/20 vision success rate for all common short-sighted prescriptions.

What Is Blended Vision Surgery?

LASIK Blended Vision is a treatment that can be used to improve reading vision in people with presbyopia and those who wish to reduce their dependence on reading glasses or contact lenses.

The standard LASIK laser eye surgery procedure corrects either long-sightedness or short-sightedness. In contrast, Blended Vision treatment restores both of these refractive errors at the same time.

During Blended Vision surgery, two different corrections are made to the eye – one for distance vision and one for close-up vision. The surgeon will determine the correction for each eye based on your individual needs.

Once the two different corrections have been made, your brain will learn to automatically switch between the two depending on what you are looking at. You will be able to see clearly in the distance and for close-up tasks without the need for reading glasses.

Is Blended Vision Good?

The results of Blended Vision surgery are excellent, with most patients achieving a perfect vision for distance and close-up activities. According to results from our data, the average patient achieves the following:

  • 92% can see clearly at arm’s length without reading glasses
  • 94% can read the small print on medicine bottle inserts
  • 98% can see clearly at a distance without glasses
  • Over 99% can read a car number plate from 20 metres

Most of our patients are very satisfied with their results following surgery and would recommend the procedure to others. We regularly receive positive feedback from patients about how their lives have changed for the better following treatment.

According to Trustpilot, an independent review website, we are the leading laser eye surgeon in the UK, with a rating of 5 stars from over 2,000 reviews.

Laser Blended Vision Procedure

Laser eye surgery for patients who need reading glasses is carried out using a technique known as Blended Vision, pioneered in the UK by David Allamby.

With Blended Vision, one eye (usually the dominant eye) is treated to correct your distance vision, and the other eye is treated to correct your near vision. The brain then blends these two images to give you a clear vision of both close and distant.

Around 90% of presbyopic patients are suitable for our Blended Vision option, which will be determined at your consultation.

Unfortunately, nearly 10% of patients are not eligible due to limitations in how some brains are wired, being unable to blend the images from each eye together. At the consultation, we can easily screen out those patients who will not like Blended Vision with a simple lens test.

For those who have received Blended Vision, if necessary, the reading eye can be retreated in later years to keep up with any age-related changes.

Ready To See Clearly?

Focus has a 100% 20/20 vision success rate for all common short-sighted prescriptions using it’s A-LASIK technique.

Blended Laser Vision vs Monovision

While both Blended Vision and monovision can be used to correct presbyopia, there are some essential differences between the two approaches. Here are some key points to consider:


Monovision involves correcting one eye for distance vision and the other eye for reading vision. This can be done with contact lenses or – in some cases – by having different prescriptions in each eye.

With monovision, you will typically need to wear reading glasses for tasks that require fine detail, such as threading a needle.

Blended Vision

With Blended Vision, both eyes are corrected for both distance and reading vision. This is done by making two different corrections to each eye during surgery.

The dominant eye is corrected for distance vision, while the non-dominant eye is corrected for reading vision. The brain automatically switches between the two depending on what you are looking at.

This means that, with Blended Vision, you should be able to see clearly in the distance and for close-up tasks without needing reading glasses.

Blended Vision Aftercare

As with all laser eye surgery procedures, there is a short recovery period following Blended Vision surgery. Most patients report that their vision improves within a day or two and can return to normal activities within a week.

However, it can take up to three months for your eyes to settle and for you to get used to your new vision. During this time, you may find that your vision is not as sharp as it was immediately after surgery. This is normal and will improve with time.

You will be given eye drops to use for the first week or so following surgery, and you will need to take care of your eyes while they heal. We will provide you with complete eye health tips and advice following your procedure.

It is important to note that, as with any surgery, there is a small risk of complications with Blended Vision. However, our experienced surgeons have a very high success rate, and complications are rare.

Book Your Free Consultation for Laser Surgery

The natural lens inside our eyes starts to lose its flexibility as we age, making it harder for us to focus on close-up objects. This condition, known as presbyopia, is a natural part of the ageing process and affects everyone at some point in their lives.

While presbyopia cannot be prevented, some treatment options are available to help you regain clear vision. One such option is Blended Vision, a type of laser eye surgery that can correct presbyopia and give you good distance vision without needing glasses or contact lenses.

At Focus Clinics, we offer a free consultation to all patients considering laser eye surgery. During your consultation, one of our experienced surgeons will assess your eyes and discuss the best treatment option.

To book your free consultation, contact us on 0207 307 8250 or fill in our online form, and we will be in touch.


Is Monovision the Same as Blended Vision?

No. Monovision is a different approach to correcting presbyopia. Blended vision is an improvement on monovision as it allows both eyes to be corrected for both distance and reading. This is done by making the dominant eye correct for distance and the non-dominant eye for reading.

On the other hand, monovision uses one eye for distance and the other for reading. This can be done by correcting one eye for distance with either contact lenses or glasses or through refractive surgery (LASIK or PRK).

What Is Blended Laser Eye Surgery?

Blended laser eye surgery is a type of laser correction that uses two different zones on the cornea to correct for both distance and near vision. The first zone is for distance correction and the second zone, which is closer to the centre of the cornea, is for near vision.

What Is Presbyond Surgery?

Presbyond surgery is a new type of vision correction procedure that can correct both nearsightedness and farsightedness, as well as presbyopia, which is the normal age-related loss of close-up vision. Presbyond surgery can also eliminate or significantly reduce your dependence on reading glasses or bifocals.

Presbyond laser blended vision patients experience excellent distance, intermediate, and near vision, with little or no need for reading glasses.

How Long Does It Take to Train Your Eyes for Monovision?

It generally takes one to two weeks for your eyes to adjust to monovision. It is common to experience blurred vision and depth perception issues during this time. Over time, your vision will settle, and you can see clearly at all distances.

How Does Laser Blended Vision Work?

Laser blended vision is a treatment that uses the LASIK procedure, where an excimer laser is used to correct the vision in each eye for different distances. This results in what is called monovision, where one eye is corrected for near vision, and the other eye is corrected for distance vision.

What Is the Difference Between LASIK and PRK?

LASIK is a type of refractive surgery that uses an excimer laser to reshape the cornea. PRK is a similar procedure that does not involve making a flap in the cornea.

LASIK and PRK are effective for correcting short sight, long sight and astigmatism. The main difference between the two procedures is that PRK can be a better option for patients at a higher risk for developing dry eye syndrome.

About the Author

Mr David Allamby is the founder and medical director of Focus Clinic - the leading provider of laser eye surgery in London. Focus’ commitment is to be the #1 clinic for vision outcome results with 100% of patients achieving 20/20 vision or even better. He is one of a limited number of UK surgeons who work in laser refractive surgery full-time.


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