fitted on K

(redirected from alignment fit)

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 ?
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. The means it is even more important to be aware of the relationship between the lens power, tear lens and over-refraction
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. This means it is even more important for you to be aware of the relationship between the lens power, tear lens and over-refraction
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).