Abstract: A negative refractive index (NRI) lens antenna is known to provide a thin lens shape compared to conventional lens antenna. By using a NRI lens antenna, a good multi-beam characteristic is ...

The formation of a rainbow requires the observer to be between the sun and falling rain, with the rain in front and the sun behind. Sunlight passes from behind the observer, refracts as it enters each ...

Patients who have a new type of lens implanted in their eyes during surgery for cataracts or to correct their eyesight have excellent or good vision over distances both near and far, and often no ...

Rigid gas permeable lenses are usually the lenses of choice after RK. They provide good visual acuity and tear exchange, they move well upon the cornea, and they allow high oxygen transmissibility to ...

There are many glorious science-based terms when it comes to surfing. We all talk about swells, of course, the underwater energy that creates a breaking wave. But we'll look at swell angles and ...

New York Eye and Ear Infirmary of Mount Sinai (NYEE) has announced the opening of the Center for Refractive Solutions—the first in New York City and one of few in the United States—that offers ...

Neuroscientists and materials scientists have created contact lenses that enable infrared vision in both humans and mice by converting infrared light into visible light. Unlike infrared night vision ...

A mirror, mechanically defined, is a sheet of substrate or metal that reflects incoming light. The polished side of a mirror, frequently coated with a layer of metal amalgam or made from naturally ...

HONG KONG, Jan. 7, 2025 /PRNewswire/ -- Eyebright Medical Technology (Beijing) Co., Ltd. ("Eyebright Medical", the "Company", Stock Code: 688050.SH, together with its subsidiaries collectively known ...

Refractive errors are common eye issues that can cause blurry or distorted vision. Treatment usually involves wearing glasses or contact lenses or getting procedures ...