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'Overnight Vision Correction Lenses'

No need for laser eye surgery? Freedom from glasses and contact lenses during the day?

Orthokeratology (Ortho-K) or Overnight Vision Correction is the non-surgical use of a specially designed gas-permeable contact lens, worn overnight, to gently correct low levels of myopia by altering the shape of the cornea to improve your vision. The lens is taken out each morning and throughout the day the cornea slowly resumes its original shape, hence the need to insert the correcting lens each day (some are alternate days depending on your prescription.) If Orth-K is suitable for your prescription, you will not need to wear glasses or contact lenses during the day.

In the UK, Bayfields are rare experts in Ortho-K fitting. Our highly skilled Optometrists will assess your particular prescription and how Ortho-K could work for you, no matter what your age or lifestyle. We can work with you to fit Ortho-K to correct your distance or close-up focus, thus liberating you from glasses or contact lenses. The uses and benefits are many and varied and you will need to discuss your particular requirements with a Bayfields Optometrist. 

According to the British Orthokeratology Society (, the procedure works best for people who have up to about -5.00D of myopia with no more than -1.50D of astigmatism.

Follow this link to watch Phillip Schofield explain the process and benefits:

Find out if you can benefit from Overnight Vision Correction by calling any Bayfields practice.



Book a FREE Contact Lens consultation and trial

You can use our online booking form, or you can call or email your nearest Bayfields to get a free, no obligation trial of contact lenses from your local, award-winning opticians.