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Experts say they're usually not needed. Doctors are prescribing antibiotics to most kids and teens who have pink eye, despite guidelines that discourage their use, researchers reported Thursday ...
Chromostereopsis is a visual illusion whereby the impression of depth is conveyed in two-dimensional color images, usually of red–blue or red–green colors, but can also be perceived with red–grey or blue–grey images. [1] [2] Such illusions have been reported for over a century and have generally been attributed to some form of chromatic ...
It’s a 7.8mm f/4 lens with STM (stepping motor technology) that keeps focus quiet and smooth. In the past, Canon has dabbled with lenses aimed at VR and spatial content. Its last spatial lens ...
Myopia, also known as near-sightedness and short-sightedness, [5] is an eye disease [6] [7] [8] where light from distant objects focuses in front of, instead of on, the retina. [1] [2] [7] As a result, distant objects appear blurry while close objects appear normal. [1] Other symptoms may include headaches and eye strain.
People with Type 2 diabetes are already at an increased risk for vision problems, including NAION. Another vision problem, diabetic retinopathy, is the leading cause of blindness in adults and is ...
When an eye focuses light correctly on to the retina when viewing distant objects, this is called emmetropia or being emmetropic. This means that the refractive power of the eye matches what is needed to focus parallel rays of light onto the retina. A distant object is defined as an object located beyond 6 meters (20 feet) from the eye.
With vision problems, this and other effects could be more common and more intense. “Every person needs a different optical mode to get the best possible experience in VR,” said Stanford’s ...
The blinding effect is caused in large part by reduced contrast due to light scattering in the eye by excessive brightness, or to the reflection of light from dark areas in the field of vision, with luminance similar to the background luminance. This kind of glare is a particular instance of disability glare, called veiling glare.
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