Summary: New research demonstrates that high-add multifocal contact lenses significantly slow myopia progression in children, with benefits that persist even after discontinuation. The lenses, ...

Is the convex lens’s focal length taken as negative or positive? Answer: The convex lens’s focal length is taken as positive because it converges light rays. Why doesn’t a plane mirror ...

RAP-219 is a clinical-stage AMPA receptor negative allosteric modulator, designed to treat focal epilepsy and other CNS disorders. What were the results of the PET and MAD-2 trials for RAP-219?

While lenses are general-purpose to an extent, there are certain lenses that lend themselves better to certain disciplines. For example, telephoto lenses have a longer focal length and are ideally ...

It's still early days, but the lens range for the Nikon Z fc is already enough to cover most users' needs. You'll see that I've put 'equivalent' focal lengths in our lens specifications below. This is ...

Like most Micro Four Thirds (MFT) lenses, this telephoto is incredibly compact and lightweight considering the focal length on offer. But don’t be fooled by the 200mm aspect: MFT has a crop ...

Testing positive for COVID-19 is not exactly a positive ... Repeatedly testing yourself and finding the tests to be negative can suggest that you are no longer contagious. But a negative COVID ...

It’s all wrapped in a new attractive chassis that eschews the curved body of the L9H for a more angular rectangle shape with a sweeping semicircle indentation in the top where the lens is housed.

According to research, vaping, like smoking, has an immediate negative effect on the user’s blood flow — even if the vape does not contain any nicotine. A study published by the Radiological ...

The Panasonic 15mm f/1.7 Leica Summilux DG ASPH is a great little lens for nature subjects — including astrophotography — thanks to a 30mm equivalent focal length and great image quality.

This systematic review reports on the efficacy and safety of focal brachytherapy for treatment of patients with localized prostate cancer. Medline, Embase, Web of Science and Cochrane were searched ...

But how do you use positive language and tone to soften the impact of a negative message? Here are some tips to help you craft a professional and empathetic response. Instead of dwelling on the ...