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Health threats from cosmic rays are the dangers posed by cosmic rays to astronauts on interplanetary missions or any missions that venture through the Van-Allen Belts or outside the Earth's magnetosphere. [ 1][ 2] They are one of the greatest barriers standing in the way of plans for interplanetary travel by crewed spacecraft, [ 3][ 4][ 5] but ...
Exposing skin to the ultraviolet radiation in sunlight has both positive and negative health effects. On the positive side, exposure allows for the synthesis of vitamin D 3. Vitamin D has been suggested as having a wide range of positive health effects, which include strengthening bones [1] and possibly inhibiting the growth of some cancers.
English. Budget. $28 million [ 3] Box office. $195.3 million. For Your Eyes Only is a 1981 spy film directed by John Glen (in his feature directorial debut) and produced by Albert R. Broccoli. The film stars Roger Moore as the fictional MI6 agent James Bond, and co-stars Carole Bouquet, Chaim Topol, Lynn-Holly Johnson and Julian Glover .
The International Agency for the Prevention of Blindness ( IAPB) is a global alliance of eye health organisations working for the prevention of blindness and vision impairment. [ 4] IAPB was established in 1975 to work as an umbrella body for global blindness prevention activities. This agency is a partner of World Health Organization. [ 5][ 6]
Health care leaders at Ohio State University and Nationwide Children's Hospital and elected officials celebrated the opening of a proton therapy center on Wedneday, Dec. 20, 2023, at OSU's The ...
Eccentricity effect. The eccentricity effect is a visual phenomenon that affects visual search. As retinal eccentricity increases (i.e. the light of the image enters the eye at a larger angle and approaches peripheral vision), the observer is slower and less accurate to detect an item they are searching for. [ 1]
We've all grown up thinking that sitting too close to the television is damaging to our eyes ... but that might not be the case. Technology spawns lots of confusion ... and a few affectionately ...
Photorefractive keratectomy ( PRK) and laser-assisted sub-epithelial keratectomy (or laser epithelial keratomileusis[ 1]) ( LASEK) are laser eye surgery procedures intended to correct a person's vision, reducing dependency on glasses or contact lenses. LASEK and PRK permanently change the shape of the anterior central cornea using an excimer ...