The thin-lens formula proved comparable to the ray-tracing method in IOL power calculations in normal eyes and eyes that underwent refractive surgery. Preoperative prediction of IOL positioning plays ...

Although diffractive optics have played a major role in nanoscale soft X-ray imaging, high-resolution and high-efficiency diffractive optics have largely been unavailable for hard X-rays where many ...

Scientists have developed a ground-breaking achromatic lens for X-rays. This allows the X-ray beams to be accurately focused on a single point even if they have different wavelengths. The new lens ...