This is a drop-in replacement for R—'s metadata service. It works with your existing R— installation, it's backwards-compatible with your library, and it takes only seconds to enable or disable. You ...

Partly that was due to the colouration of the actual materials, but also I’m colour blind, so most of the work I’ve made has been in that scope.’ He continues, ‘I recently got lenses that partially ...

Abstract: New multistage self-aligned quadrupole correction-lens systems are proposed for correcting the spherical aberration of a rotationally symmetrical lens in a probe-forming system such as ...

An eye specialist, usually an ophthalmologist or optometrist, will examine your eye, assess your vision, and take the ...

Convex and concave lenses can both be used to correct defects of vision. The most commonly occurring defects of vision are ‘short sightedness’ and ‘long sightedness’. People who are ...