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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]
Intraocular lens. An Intraocular lens ( IOL) is a lens implanted in the eye usually as part of a treatment for cataracts or for correcting other vision problems such as short sightedness and long sightedness; a form of refractive surgery. If the natural lens is left in the eye, the IOL is known as phakic, otherwise it is a pseudophakic lens (or ...
Healthy candy is a misnomer, experts say. While candy can be part of a healthy diet, in moderation, it does not count as a health food, says Jay — even if it's sugar-free or low-calorie. "Some ...
Optical illusion is also used in film by the technique of forced perspective . Op art is a style of art that uses optical illusions to create an impression of movement, or hidden images and patterns. Trompe-l'œil uses realistic imagery to create the optical illusion that depicted objects exist in three dimensions.
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 ...
Distribution of rods and cones along a line passing through the fovea and the blind spot of a human eye [1]. A blind spot, scotoma, is an obscuration of the visual field.A particular blind spot known as the physiological blind spot, "blind point", or punctum caecum in medical literature, is the place in the visual field that corresponds to the lack of light-detecting photoreceptor cells on the ...
The dangers of LED face masks you should know about. The latest recall in the beauty world just happens to involve one of the biggest at-home trends for skincare junkies and one of the leading ...
Suddenly, the sperm whale becomes entangled in a discarded fishing net and begins sinking toward an area full of underwater volcanoes. To make matters worse, a colossal squid attacks the sperm whale's calf. Chris and Martin must put their Creature Powers of both sperm whale and squid to good use to rescue the mother sperm whale and her calf.