dioptre


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dioptre

(US), diopter
a unit for measuring the refractive power of a lens: the reciprocal of the focal length of the lens expressed in metres
References in periodicals archive ?
It said the criteria used to select patients for the study included those with prescriptions between the powers of 0 to 6 dioptres of myopia and between 0 and 1 dioptres of astigmatism, and that 80% of all patients Optical Express treated with laser eye surgery fell within each of these categories respectively.
In patients with keratometry readings less than 53 dioptres, there was an average increase of three lines of BCVA whereas those with keratometry readings greater than 55 dioptres lost on average one line of BCVA.
50 dioptres and a reduction in comatic aberrations.