Lens

The lens is located just behind the iris. It is held in position by zonules extending from an encircling ring of muscle. When this ciliary muscle is ...
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lens: the portion of the eye that focuses the light on the retina.
leukocytes: the white blood cells produced in the bone marrow that have various functions in the body, such as immune reaction.
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A lens magnifies by bending light (see refraction). Optical microscopes are restricted in their ability to resolve features by a phenomenon called diffraction which, ...
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Lens the clear structure behind the iris and pupil that focuses the light on the retina
(lens = lentil - because of its shape)
Leukocyte white blood cells
(leuco = white; cyto = cell) ...
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1. ocular lens or eye-piece
2. objective turret, or nosepiece
3. objective lenses
4. coarse adjustment knob
5. fine adjustment knob
6. object holder or stage
7. mirror
8. diaphragm and condenser ...
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The optical zoom lens system assists the objective in image magnification. It determines the size of the scan region and the apparent magnification of the image.
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The lens of each visual unit focuses the image on light sensitive membranes of a small number of photoreceptors within that unit.
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In previous Flow Cytometers, the RAS light has been viewed perpendicularly to the liquid flow, typically using a high-numerical-aperture (NA) microscope objective lens or fiber optic.
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For example, [your eye] is one of the very best defended tissues-every time you put in a contact lens [from] the holder where it's been festering and the chemicals are old, you probably got a little biofilm on the lens.
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Its first-order Fresnel lens can be seen for nineteen miles.
November 19 - Opera "Genevieve de Brabant", composed by Jacques Offenbach, debuts at the Theatre de Bouffes Parisians in Paris.
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In the eye, a nutritive, watery fluid between the cornea and the lens that focuses incoming light rays and maintains the shape of the eyeball.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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ommatidia The functional units of the invertebrate compound eye, each one of which has a lens, focusing cone, photoreceptive cells, and forms an image.
ommatidium One of the optical units of the compound eye of arthropods.
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The innermost layer of the vertebrate eye, containing photoreceptor cells (rods and cones) and neurons; transmits images formed by the lens to the brain via the optic nerve.
retinal
The light-absorbing pigment in rods and cones of the vertebrate eye.
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For example, to a botanist working with angiosperms ordinary means might mean a hand lens; to an entomologist working with beetles it might mean a dissecting microscope; ...
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ectoderm
The outermost of the three primary germ layers in animal embryos; gives rise to the outer covering and, in some phyla, to the nervous system, inner ear, and lens of the eye.
Lab 11 Animal Diversity I
Lab 14 Gametogenesis and Development ...
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compound eye -- Found in many but not all arthropods, a compound eye is composed of a large number of small, closely packed simple eyes (ommatidia), each with its own lens and nerve receptors.
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