spectacle plane

spec·ta·cle plane

the plane at which spectacles are worn.
References in periodicals archive ?
5 diopters at the spectacle plane, and the reduction of myopia in adults with myopia ranging from greater than -15.
0 D at the spectacle plane, with a maximum manifest refraction spherical equivalent (MRSE) of +6.
0 diopters with astigmatism ranging from 1 diopters to 4 diopters at the spectacle plane, with anterior chamber depth (ACD) 3.
5 diopters at the spectacle plane and the reduction of myopia in adults with myopia ranging from greater than -15.