Sentences with phrase «eye focuses light»

A reflective surface on the back of each eye focuses light onto two retinas to form an image.

Not exact matches

Adding ergonomic task lighting focuses the light on the task at hand, reduces glare, and lessens eye strain.

The lenses support the eye's effort in focusing at ultra - near distances that are typical of handheld devices by filtering out «harmful blue - violet light emitted by digital screens.»

A study found that people who work in offices filled with natural light experience substantially less eye strain, headaches and blurred visions, all of which deter focus and performance.

try reading further:» «To suppose that the eye with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correction of spherical and chromatic aberration, could have been formed by natural selection, seems, I freely confess, absurd in the highest degree.

Patsy Keller, a Burke County woman who grew up at the foot of the mountain, said three things must happen in order for you to see the Brown Mountain Lights: «You must have your eyes focused on where they are.

The New Testament tells us to focus on eyes on Jesus (Heb 12:2); and to have that eternal perspective where we know that this world is not our home and that all we do should be done in the light of eternity.

Oh, btw, the entire quote is» «To suppose that the eye with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correction of Spherical and chromatic aberration, could have been formed by natural selection, seems, I freely confess, absurd in the highest degree.

Slit pupils offer a deeper field of focus but still let enough light into the eye for night vision.

«These cyanobacteria use the entire cell body as a lens to focus an image of the light source at the cell membrane, as in the retina of an animal eye,» says University of London microbiologist Conrad Mullineaux, who helped to make the discovery.

Unlike the eyes of all other back - boned animals, which use a lens to focus light, this one uses mirrors.

The image - producing light rays that enter our eyes have trouble bending and focusing when the water's density is almost same as that of eye fluid.

Eyes and cameras both have lenses that adjust the path of the incoming light to bring an image into sharper focus.

Several existing spectacle systems commonly used in virtual reality systems use a liquid crystal screen or mosaic of light - emitting diodes to form a television image which a lens and mirror focuses on the wearer's eye.

The cornea is the surface of the eye; it helps focus rays of light on the retina at the back of the eye, and though it appears to be uniform and smooth, it can be misshapen and pockmarked with dents, dimples, and other imperfections that can affect a person's sight.

In a healthy eye, light entering the pupil is focused by the lens and then passes through the vitreous humour — the jelly like central region — to the retina at the back of the eyeball.

The eye can no longer focus light on the retina, focusing it instead just behind and causing poor close - up vision.

To simplify the problem of studying how the brain makes a spatial map, a team lead by Jean - René Duhamel and Werner Graf of CNRS - Collège de France in Paris trained two macaque monkeys to focus their eyes on a spot of light on a screen; the dot would appear for a few seconds, disappear, then appear a few seconds later somewhere else on the screen.

But along with professors and senior co-authors Beth Brainerd and Sharon Swartz, Harper figured out how to focus a lot of light right where the tongue tip would be without shining any of that light into the bats» eyes.

Most animals use lenses to focus light onto their retina, a light - sensitive layer of tissue coating the inner portion of the eye.

In order to capture a photographic image in a camera or for your eyes to focus on an image through eyeglasses, the different colors of light must pass through the lenses and converge to a point on the camera sensor or on the eye's retina.

Such rules include perspective (parallel lines appear to converge in the distance), stereopsis (our left and right eyes receive horizontally displaced images of the same object, resulting in the perception of depth), occlusion (objects near us occlude objects farther away), shading, chiaroscuro (the contrast of an object as a function of the position of the light source) and sfumato (the feeling of depth created by the interplay of in - and out - of - focus elements in an image as well as from the level of transparency of the atmosphere itself).

This work focused on rhodopsins, which are light - activated molecules found in the human eye as well as in bacteria.

There is «elongation of the eye» which results in the light being focused in front of the retina, causing blurred vision that has to be corrected by glasses, contact lenses or laser eye surgery.

Rosenstiel prescribed a hard, gas - permeable lens which created a new spherical refractive surface on the front of the eye which allowed light rays to focus accurately on the retina.

Most clinical instruments are limited to imaging depths of 2 to 3 millimeters, and it is difficult to switch between imaging the front and back portions of the eye because the eye is composed of elements that bend the light to focus it onto the retina.

The larvae have six pairs of eyes, two of which Buschbeck has confirmed have bifocal lenses — which focus light in two slightly separate planes.

To overcome these challenges, the researchers used an electrically tunable lens to build an OCT instrument that could focus light in a way that enabled whole - eye imaging.

For example, people in the study consistently associated narrowed eyes — which enhance our visual discrimination by blocking light and sharpening focus — with emotions related to discrimination, such as disgust and suspicion.

And so I think Lucas was right to focus in on this moment in which the evidence suggests he actually really did constantly stick this - what he called a bodkin - in his eye because he wanted to know not just something about theories of light but also something fundamentally about how fragile we are as sensing and thinking beings.

Human eyes are built to collect and focus light that is bouncing off of the world around us.

It's called optical SETI, and its instruments are focused on a different band of the light spectrum than radio astronomy, looking instead at the same waves our eyes take in, along with infrared frequencies, which are just a smidge longer.

It has mirrors to gather and bring the light to a focus where its «eyes» are located.

Stargardt's generally refers to a group of inherited diseases causing light - sensitive cells in the inner back of the eye (retina) to deteriorate, particularly in the area of the macula where fine focusing occurs.

Also, look away from the screen periodically to rest your eyes and change focus, and try a low - voltage floor lamp in place of bright overhead lights.

An under - eye concealer and facial highlighter that refracts light for a soft - focus finish.

Because the lips are the focus of this look, I like to keep the eyes bare or very natural and light.

So, here's to keeping focused and keeping our eyes on the light at the end of the tunnel... a tunnel filled with packing, packing, cleaning, cleaning, more packing, and more cleaning.

Think of it as holding a flashlight against your cheek, shining the light right underneath your eye, and drawing the focus upward.

I left my lips in a subdued light pink neutral shade to keep the focus on the eyes.

The Katy Perry Inspired Wide Awake Makeup Video Tutorial doesn't require advanced makeup skills since it focused on enhancing the crease with a matte eye shadow and enhancing the top eyelids with a light nude pearly eye shadow.

I think that you have rarely seen me with nude lips, I like to put the focus on the eyes but at the same time I like to create a point of light and color on the lips.

Moisturizer: Next, I smoothed Physicians Formula Organic Wear Tinted Moisturizer in Light to Natural over my entire face, focusing on adding a little more under my eyes, around my nose and chin.

Focus on blending the lighter shade onto your under - eye contour, the bridge of your nose, the center of your forehead, and the middle of your chin.

Using Martin Ruhe's composed cinematography and his own photographer's eye, Corbijn exploits lighting, focus and camera angles to illuminate or conceal the tragedy at its core.

Rey of light: the anticipation might focus on J.J. Abrams as he labors to orchestrate a sequel for all time — but keep your eye on the new star

Added to this is the volumetric fog, the shadows projected now by every single object on the map and also a feature called dynamic eye adaptation that will tighten the field of view and the focus of objects according to the intensity of the light.

Light - emitting screens like the iPad's can cause eyestrain — especially when reading, which makes your eyes focus much more intensely than when watching a movie, obviously.

The most light - sensitive parts of our eyes (those we need to see dim objects) are on the edges of the region we normally use for focusing.

It is part of the blood supply to the developing lens (the structure in the eye that focuses light on the retina).