| Orthokeratology is the use of contact lenses to mould the shape
of the cornea to reduce or correct myopic (short-sighted) errors
of the eye. In some ways it is similar to the use of dental braces by an orthodontist to straighten crooked teeth. The main difference is that if a tooth position is corrected for some months it will usually stay in the new position. The cornea is highly elastic however, and always returns to its original shape. For this reason retainer lenses are worn several nights per week after the ideal corneal shape has been achieved. |