fitted on K

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fitted on K

Refers to a contact lens in which the back optic zone radius is the same as that of the flattest meridian (or the mean of the two principal meridians) of the cornea. K is a symbol referring to the keratometer reading of the principal meridians of the cornea. Syn. alignment fit. See flat lens; steep lens.
References in periodicals archive ?
See Table 2 for a description of country numbers Table 4 ML alignment: Alignment fit statistics for the Family Values Scale across 27 countries Factor loadings Factor 1 Factor 2 Fit function Fit function Item contribution [R.
Of course, during an assessment, the pre-reg will probably only have a selection of trial lenses to choose from so, unless they are lucky, they are not likely to get 6/6vision, or an alignment fit.
Of course, during your assessment you will probably only have a small selection of trial lenses to choose from so, unless you're lucky, you aren't likely to get 6/6 vision or an alignment fit.
First of all, central fit is assessed for a light feather touch at the apex of the cone and the rest of the pattern as close to an alignment fit as possible (Figure 3).