What does numerical aperture actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

The numerical aperture of a spherical lens, abbreviated NA, can be calculated from the effective focal length and thediameter of the input source. For collimated incident light, when the refractive ...

In patients who previously underwent refractive surgery or corneal inlay implantation, the small-aperture IC-8 Apthera IOL ...

Worse, the gain from using a higher-index liquid with existing lens glass is too small to be worth the trouble, according to Vandenberghe. So at the same time, researchers are looking into newer glass ...

A paper titled "Three-dimensional large-aperture lens antennas with gradient refractive index," published in SCIENCE CHINA Information Sciences, 2013, No. 12, investigates the principles and ...

Prospective study of small-aperture IOL implantation in eyes with previous refractive procedures. Presented at: American Academy of Ophthalmology meeting; Nov. 3-6, 2023; San Francisco.