Once a patient has shown the appropriate response to a trial, custom-made corneal molding lenses will be ordered. After these lenses have been fitted, the patient will start to wear the lenses on a regular basis, typically overnight. For the first week the vision may not be sufficiently good for all day-to-day activities. In these circumstances, daily disposable soft contact lenses will be worn during the day. After the first 2-4 weeks, excellent vision and comfort are normally maintained whilst wearing Ortho-K lenses. Occasionally more than one set of lenses are required to effect the desired change.
As most of the visual changes occur rapidly in the first few weeks, fairly frequent examinations and possible lens changes need to take place then. Stabilisation procedures then follow at a slower pace over the next few weeks. The programme length varies between 1 and 3 months depending upon the degree of visual error. The fees for Refractive Therapy include all visits in the first year.
The final wearing time depends on many variables, but the treatment aim is good unaided vision most or all waking hours, with lenses being worn overnight. Some patients will be able to wear their lenses every second night.