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How is safety measured?

Laser eye surgery London

If you are looking for a laser eye clinic in London, then the London Vision Clinic should be on your shortlist.  

That may seem like a strong statement, but the London Vision Clinic emphasises that, in expert hands, laser eye surgery can be an extremely safe, life enhancing experience. More than 100,000 laser eye surgery procedures will be done in the UK this year. Read the guide to Laser Eye Surgery to help make the right choice for your eyesight.

Contact London Vision Clinic


Safety involves avoiding ‘compromise’ to your vision. Visual compromise is defined as blurring, doubling or distortion that cannot be correctedby glasses to achieve the same level of eyesight you had before surgery with glasses. This is different from a situation in which vision is improved after surgery but there is some blurring which can be corrected with glasses. In this case the vision is not compromised; it is simply not fully focused (and can be corrected by glasses or a simple

enhancement procedure).


What kind of visual compromise is significant? The standard is to measure blurring by the number of lines off the bottom of the eye chart that the patient is no longer able to read. For example, if before surgery you were able to see 20/16 with glasses, and after surgery your vision, even with glasses, is 20/25, this would be classified as a loss of two lines of best-corrected vision. The NICE report looked at the results of studies published in medical journals. It found that on average, less than one per cent of LASIK patients lost more than two lines of best-corrected vision with glasses.


For expert surgeons, the likelihood of an eye losing two lines of best-corrected vision is 1 in 1,000 (0.1%) and the chances of losing more than this are less than 1 in 1,000.


The best way to ensure that your treatment is done to the most exacting safety standards is obviously to have treatment with an expert surgeon who chooses to operate with the best technology, and the best diagnostic preparation and follow-up.

Get a quote

Get a quote for laser eye treatment

If you are looking for a quote for laser eye surgery, or want more information about treatment in your local area, you can complete the Laser Eye Surgery Enquiry Form. Your enquiry will be forwarded to a maximum of three clinics or providers of laser eye treatment who partner with the Private Healthcare UK web site.