Does anyone know any opticians in London/Kent (in particular South London/kent) who offers Ortho k lenses and also axial length check? I believe whole wearing ortho k, the usual sight test to check prescription cannot be performed and the only 2 ways to check if ortho k is slowing myopia down is by either stopping the use of lenses for several weeks or have an axial length check. My local opticians doesn't offer the axial length check as the machines are very expensive. As with myopia control in children, surely it should be necessary to keep an eye on the prescription to see if the lenses are working?!