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(CNN) — Adding a blue-light filter to your eyeglasses may not ease eye strain from computer work, protect the retina or help with sleep at night, according to a new

Blue light from computer screens and smartphones stimulates eyes and can cause sleep problems — but a new analysis finds blue light blocking glasses may not be much help.

Nasiruddin's photo on Unsplash lenses Glasses that filter blue light They are not effective, or rather, they do not reduce eye strain associated with the

Spectacles that are marketed to filter out blue light probably make no difference to eye strain caused by computer use or to sleep quality,

Previous studies have found that blue light filtering glasses help protect against retinal damage, improve sleep patterns and protect eye health.

Researchers looked at the effects of the lenses compared with non-blue-light filtering lenses for improving visual performance.

One researcher found masks do much more to prevent someone with COVID-19 from spreading the virus than protecting someone from contracting it.

Background: Depression is an important morbidity associated with stroke that impacts on recovery, yet is often undetected or inadequately treated. Objectives: To evaluate the benefits and harms of pharmacological intervention, non-invasive brain stimulation, psychological therapy, or combinations of these to treat depression after stroke. Search methods: This is a living systematic review. We search for new evidence every two months and update the review when we identify relevant new evidence. P...

Find out how many steps a day to lose weight and the tips to achieve it. Learn how walking can improve your fitness level and health in 2023.

Find out how many steps a day to lose weight and the tips to achieve it. Learn how walking can improve your fitness level and health in 2023.