A special cosmetic lens can be prescribed and fitted for a damaged or unsightly eye or where an eye has been removed. Specialised fitting procedures may include taking a cast of the eye or orbit so that an exact fit can be achieved. Once the final shell has been made an iris is painted to match the good eye. Occasionally it is necessary to sit with the artist in order to achieve a perfect colour match.
The Inclusive fee including the prostheses or contact lens fitting and follow up visits is £1250.
Ortho-K (orthokeratology), also known as overnight vision correction, is the use of specially designed RGP (rigid gas-permeable) contact lenses to alter the shape of the cornea in order to reduce or correct myopia (short-sight).
We use EyeDream lenses from No7 Contact Lenses because they produce "accelerated orthokeratology for the reduction of myopia in low-mid myopic corrections, using the trusted EyeDream system".
Ortho-K can also be effective with low degrees of astigmatism (when the front of the eye is rugby ball shaped). It has been practised to a limited degree in the United States for many years; however, in the last five years, new technology has become available (corneal topography) that accurately scans the cornea and allows the manufacture of lenses with much greater accuracy than in the past, giving a controlled and precise reduction in the eye's optical imperfection. In addition, new developments in lens materials have been made that enable safe overnight wear to be possible.
Ortho-K can be used to help control myopia progression in children and teenagers by reducing peripheral retinal blur, which has been shown by recent studies to be the driving force behind myopia progression. Glasses and regular contact lenses will control central blur, providing a clearly perceived image, however the peripheral retina will still receive a blurred image. Due to the unique way in which Ortho-K contact lenses flatten the corneal profile to correct the myopia, peripheral retinal blur is reduced, and it is thought that this is the reason why Ortho-K is the only proven method to help control the myopic shift in youngsters.
The freedom from any artificial aid appeals to myopic glasses and contact lens wearers and is ideal for sportsmen, those who work in dusty or dirty environments or people who find spectacles and conventional lenses a nuisance. In addition, those who need to have a certain degree of uncorrected vision to satisfy their employers or a licensing body (e.g. pilots, police) can also be helped by Ortho-K.
The procedure works best for prescriptions of up to -4.00 dioptres of myopia and 2.00 dioptres of astigmatism. Errors above this may be reduced but total correction is not usually possible. In addition, there are several unknown factors for each individual, such as the complexity of the corneal shape and the rigidity of the cornea itself, so the speed of corneal moulding from one individual to the next will vary. While the success rate is very high, total success cannot be guaranteed due to these factors.
The procedure is time consuming and involves several lens changes, which means that there will be more than one consultation fee. Once complete, the ongoing costs are significantly less than conventional soft contact lens wear. In the first year you can expect to pay around £1,000, which covers all of the appointments, and one pair of lenses. This cost will be slightly higher if you have astigmatism, as the lenses required are more complex.
First, an assessment appointment including a full eye examination and computerised corneal topographical scan will be required. This will give us the opportunity to assess the general condition and health of the eyes and also to determine the likely effectiveness of the procedure in you.
Based on these measurements, a pair of Ortho-K contact lenses will be manufactured to reshape the cornea to a flatter profile to reduce myopia and astigmatism while dramatically improving unaided eyesight. Excellent vision and comfort are normally maintained while wearing Ortho-K contact lenses.
You will have an assessment the first morning after wearing the lenses overnight, and then the lenses will take around two weeks to have their full effect. The next check up will be after two to three weeks, when we will check that the full correction has been attained. If not, the lenses will be remade, usually with minor adjustments, until the vision is sufficiently corrected (although you will only pay for the final, successful pair of lenses). You can expect to need around two to four visits in the first two months of being fitted with Ortho-K contact lenses.
Once the lenses are working well and the vision is sufficiently corrected, you will need to wear the lenses every night in order to maintain the effect. A check-up every six months is recommended and you will need to replace the lenses every six months to a year, as they will degrade with time and usage.
No ethical surgeon will treat a patient until they are at least 18 or, more usually, 21 years old. Ortho-K is available to children of a young age and upwards.
There is significant understanding of the effects of contact lens wear on the cornea because of the many years of lens use. There is no post-operative pain. Ortho-K is significantly cheaper and does not preclude surgery in the future. As yet, the long-term effects of Lasik are not totally understood.