Learn how the Ulcer Index measures downside risk through depth and duration of declines. Discover its calculation and ...

Faculty of Health, Medicine and Social Care, Medical Technology Research Centre, Anglia Ruskin University, Chelmsford, United Kingdom Introduction: The eye lens is a sophisticated optical element that ...

It is wildfire season, which could mean more air pollution, too. Here are a few tips to protect yourself. By Adeel Hassan and Hilary Howard Wildfires burning across Canada are generating clouds of ...

Optical constants are generally assumed to be causal functions. Mathematically, causality manifest itself in the Kramers–Kronig (KK) relations that relate the real and imaginary part of physical ...

A drug’s therapeutic index is a ratio that doctors use when prescribing medications and determining dosage. It shows how much of a drug a person’s blood can contain before it becomes toxic. The ...

Scientists have demonstrated that negative refraction can be achieved using atomic arrays -- without the need for artificially manufactured metamaterials. Scientists have long sought to control light ...

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

Have you ever sat on the bottom of a swimming pool and pondered your watery ceiling? Most of the surface is a sheet of light blue, and you can't see through it, even though the water is clear. But ...

Please provide your email address to receive an email when new articles are posted on . As a resident more than 2 decades ago, I was taught by my attendings that the best refractive target for most ...

At long last, National Institutes of Health (NIH) principal deputy director Lawrence Tabak admitted to Congress Thursday that US taxpayers funded gain-of-function research at the Wuhan Institute of ...

It's hard to beat index funds for simplicity and low fees -- and performance, too. Most large-cap stock funds have underperformed the S&P 500 index. Long-term investing in one or more index funds can ...