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 ?
Researchers at Cardiff University have found that for every additional year spent in education, there is an increase in myopic refractive error (short-sightedness) of 0.27 dioptres.
After taking account of potentially influential factors, Mendelian randomisation analyses suggested that every additional year of education was associated with more myopia (a refractive error of 0.27 dioptres a year).
The University of Bristol and Cardiff University research team found that for every additional year spent in education, there was an increase in myopic refractive error of -0.27 dioptres.
All subjects were gender and age matched to those of the previous study, and had a lens power of -1 to -6 and less than a dioptre of astigmatism.
Her accommodation was four dioptres, convergence 10 dioptres, poor accommodation rock and one dioptre of hyperopia.
In about 30 seconds the i.Profilerplus system analyses all parameters needed for the use of lenses featuring i.Scription technology with accuracy to the nearest 1/100 dioptre.
You would not believe the number of prescription orders we receive daily showing over three prism dioptres of anisometropia with no indication that it should be corrected.
They found that every additional year of education was associated with a more myopic refractive error of -0.18 dioptres per year.
* 9 (25%) patients had deviation within 10 prism dioptres on prism bar cover test.
The power or strength of what items are measured in dioptres?