Orthokeratology, also known as Ortho-K, night-time lenses, and EyeDream lenses, involves the precision fitting of special rigid gas permeable (RGP) lenses which are worn overnight to subtly reshape the cornea. This reshaping effectively corrects the myopia for about a day, so that the following day there is no need to wear glasses or contact lenses. The effect is temporary so the lenses have to be worn every night in order to achieve good vision the next day. The optics the lens produces on the cornea bends the light so that the peripheral defocus is in front of the retina.
Ortho-K works best for those with a maximum prescription of -4.50 and with less than -1.50 of astigmatism. It is a great option for:
- Kids and teenagers with progressing myopia
- Kids, teenagers and adults who would like the freedom for visual correction during the day (even if they aren’t progressing!)
- Those who are unable to wear lenses during the day due to dry eyes or allergies
- People who do a lot of water sports, sailing, swimming etc. where in isn’t practical to wear glasses or soft contact lenses.
For further information on Ortho-K please give us a call or pop in for a chat. You might also like to have a look at http://www.eyedreamlenses.co.uk/.
Soft Multifocal Contact Lenses
These monthly disposable lenses were originally designed for people aged over 45 who need reading glasses. They have both distance and near prescriptions in the lens, and they actually provide the same optics as ortho-k lenses, making them a great option for myopic kids. They are worn during the day rather than at night, which some children may prefer. They are also a great option for young people with prescriptions over -4.50. The efficacy of multifocal lenses for myopia control is around the same as ortho-k, 50%.
More information can be found on this website: http://www.myopiaprevention.org/. Of course you can also get in touch for more information on suitability, pros and cons, practicalities and cost.