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Eye color. Eye color is a polygenic phenotypic trait determined by two factors: the pigmentation of the eye 's iris [ 1][ 2] and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris. [ 3]: 9. In humans, the pigmentation of the iris varies from light brown to black, depending on the concentration of ...
Eye black. Finnish player of American football wearing eye black. Eye black is a grease or strip applied under the eyes to reduce glare, although studies have not conclusively proven its effectiveness. It is often used by American football, baseball, softball, and lacrosse players to mitigate the effects of bright sunlight or stadium floodlights.
Visual system. The visual system includes the eyes, the connecting pathways through to the visual cortex and other parts of the brain (human system shown). The eye is the sensory organ of the visual system. The iris, pupil, and sclera are visible. Identifiers.
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 ...
Palep herself was quite concerned with the dosage of the light therapy provided by the masks, as not every patient may require the same amount and duration of the treatment. "The potential dangers ...
Plan of retinal neurons. (Pigmented layer labeled at bottom right.) The pigmented layer of retina or retinal pigment epithelium ( RPE) is the pigmented cell layer just outside the neurosensory retina that nourishes retinal visual cells, and is firmly attached to the underlying choroid and overlying retinal visual cells. [ 1][ 2]
The human eye is a sensory organ in the visual system that reacts to visible light allowing eyesight. Other functions include maintaining the circadian rhythm, and keeping balance . Arizona Eye Model. "A" is accommodation in diopters. The eye can be considered as a living optical device. It is approximately spherical in shape, with its outer ...
The central outermost transparent colorless part of the eye (through which we can see the iris and pupil) is the cornea. Cross-section of the human eye, showing the position of the pupil. The pupil is a hole located in the center of the iris of the eye that allows light to strike the retina. [ 1 ] It appears black because light rays entering ...