Dry eye disease (DED) is a condition characterized by an array of different symptoms, including dryness, ocular discomfort, fatigue, and visual disturbances. This condition has become increasingly common in recent years owing to an aging society, increased screen time, and a highly stressful social environment. There are about 1 billion people, worldwide, who have DED. Undiagnosed and untreated DED can ...

Scientists have created a face mask that can detect common respiratory viruses, including influenza and the coronavirus, in the air in droplets or aerosols. The highly sensitive mask, presented September 19 in the journal Matter, can alert the wearers via their mobile devices within 10 minutes if targeted pathogens are present in the surrounding air. “Previous research has shown face mask ...

First, pause and take a deep breath. When we breathe in, our lungs fill with oxygen, which is distributed to our red blood cells for transportation throughout our bodies. Our bodies need a lot of oxygen to function, and healthy people have at least 95% oxygen saturation all the time. Conditions like asthma or COVID-19 make it harder for bodies ...

A smartphone application using the camera function was able to detect flawed blood flow in a wrist artery for patients undergoing coronary angiography, during a randomized trial, said some recent findings. The results highlight the potential of smartphone applications to help physicians make decisions instantly, said researchers. "Because of the widespread availability of smartphones, they are being used increasingly as ...