Learn more about the process by viewing the Overview and access to Field Review page. The American College of Radiology will periodically define new practice parameters and technical standards for ...

With the best macro lenses, photographers can capture startlingly detailed images of the tiniest subjects, both natural and well-made. If you've come across an image of a tiny insect or plant that ...

lenses with extended depth of focus (EDOF), and lenses for astigmatism correction (toric lenses). In the context of refractive lens surgery, such as for correcting presbyopia (age-related vision ...