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Pupil in Medical News

Ongoing Study Shows That Endovascular Therapy is Associated With High Cure Rate for Childhood Eye Cancer

...hildren that arises in cells in the developing retina. Typically, this cancer is associated with a late diagnosis as one of the only symptoms, a white pupil replacing the normal black, presents when the tumor occupies over one-third of the eye. Conventional therapy for this cancer includes laser treatment...

Make Sure Your Baby is Seeing the Most Important Things in His World

... Eye Health - The optometrist will examine the eye's structure as well as the eyelids, tear ducts, and other parts of the eye. The doctor will check pupil function and assess visual field. Optometrists may use a hand-held biomicroscope to evaluate the front of the eye. And once the baby's eyes are dilate...

Researchers develop light-treatment device to improve sleep quality in the elderly

...eaching an older person's retina, therefore reducing the amount of light for the circadian system." As we age, the lens in the eye thickens and the pupil shrinks, reducing the amount of light passing through to the retina. Making matters worse, in some cases, such as with persons with Alzheimer's disea...

Kids Who Spend More Time Outdoors Have Better Vision

...s outdoors, provides a 'stop' signal to block myopia progression," Gwiazda said. "Outdoor exposure also may be beneficial, because sunlight causes the pupil to constrict, resulting in a larger depth of focus -- the range in which objects appear clear -- and less image blur that's associated with myopia dev...

Glaucoma Awareness Not Just for Humans

...s condition. Dr. McNabb recommends being on the look out for the following signs: 1.   Acute blindness 2.   Dilated pupil 3.   Cloudiness of the cornea 4.   Increased prominence of blood vessels on the white of the eye (“Bloodshot eye...

Mitosis gets harder thanks to new gene discovery

... A biological process taught to every pupil studying science at high school has just become a little more complicated thanks to a new discovery published today. Scientists from the University...

Research to lead to brain tumor therapies

... 21, from Gunnislake in Cornwall, first became aware that there was a problem when he started to suffer from very bad headaches at age 15. He was a pupil at Tavistock College at the time and in the middle of his GCSEs. He was referred for an MRI which identified a tumour on his brain, and was immediatel...

Eyes a Window to Hearing Loss?

...ible that they could use a pair of specialized goggles to detect changes in pupil size. They found that when a novel sound was introduced, the pupils in h...y heard a certain noise and compared those results to those obtained by the pupil response, and found that the results were very similar, within three decibe...

Blinded by the Light? Vision Problems and Visual Discomfort Make Driving in the Dark Difficult, Uncomfortable for Most Americans

...y bothersome, and nearly half (48 percent) report experiencing glare or light sensitivity while driving in the dark. "Low light levels cause an eye's pupil to dilate, which can accentuate any existing focusing problems and result in blurred vision," explains Dr. Elise Brisco, a Los Angeles based optometri...

Brain imaging reveals breakdown of normal emotional processing

... resonance imaging scanner detected changes in neural activity. Johnstone and his colleagues also recorded levels of emotional excitement by measuring pupil dilation. The data showed distinctive patterns of activity in the ventromedial prefrontal cortex (VMPFC) and the right prefrontal cortex (PFC), are...
Pupil in Medical Technology

Omeros Announces Patient Enrollment in Phase 1/Phase 2 Study of OMS302

...hase 1/Phase 2 trial is a randomized, double-blind, vehicle-controlled and parallel-assigned study evaluating the effects of OMS302 on dilation of the pupil during cataract surgery and on pain, discomfort and inflammation following the procedure. OMS302 is added to standard irrigation solutions used in oph...

New Localized Cancer Treatment for Advanced Retinoblastoma Saves Children From Having Eyes Removed, Restores Vision in Some Cases

... years of age at an advanced stage because young children do not complain about loss of vision in only one eye. By the time white discoloration of the pupil is noticeable, the tumor is already large. Using moving X-rays, an interventional radiologist threads a catheter up the femoral artery, guides it ...

Positive Results for NKTR-118 (oral PEG-naloxol) Presented at American Academy of Pain Management Meeting

...drogen GI motility test. Pupillometry, a measurement of the diameter of the pupil of the eye, was used to monitor antagonism of morphine-induced pupil constriction, a central nervous system (CNS) effect. Escalating single oral...
Pupil in Medical Products

Brown Pupil Dilator

Description: This System Is Designed To Manually Dilate A Small Pupil With Greater Safety And Efficacy. The Bimanual Technique Maximizes Safety By Allowing The Iris Hooks To Be Advanced Parallel, Rather Than Perpendicular, To The Plane Of The Anterior Capsule, Thus Minimizing The Risk Of Inadvertent Capsule Tea...
Company:Rhein Medical, Inc.

Morcher® Pupil Dilator

Description: The Optimal temporary implant for use with patients who have cataract and contracted pupils! The pupil dilator type 5S is a semicircular elastic PMMA ring for the expansion of the pupil during phacoemulsification. It is supplied in sterile packing for a single use. Indication: Expansion of the pupi...
Company:FCI Ophthalmics Inc.

Perfect Pupil Injectable

Description: Perfect Pupil Injectable was designed to provide the surgeon with an optimal work area and reduce the risk of surgical complications during cataract and retinal surgery. Perfect Pupil Injectable is an expansion device for small and medium sized pupils which allows expansion of the pupil to 8mm cons...
Company:Milvella

Super Pupil XL

Description: Volk's super series slit lamp biomicroscopy lenses. Examination through small pupils. Provide unprecedented fundus diagnostic capability, specifically addressing maximum potential field of view, fundus image resolution & enhanced stereoscopic visualization....
Company:Keeler Instruments Inc.

Fukasaku Small Pupil Irrigating Nucleus Chopper

Description: Small pupil irrigating nucleus chopper, wedge-shaped inferior edge with, blunt tip and front notch, for engaging the iris, 0.6 mm dual sideports, 20 gauge....
Company:Katena Products, Inc.

Auto Ref/Keratometer ARK-530A/510A

Description:... The combination of new measuring principle - pupil Zone Imaging Method - and unique technology - SLD - offers high accuracy and reliability in refraction measurement. Reliable Keratometer The ...
Company:NIDEK, Inc.

Auto Refractometer AR-330A/310A

Description:... The combination of new measuring principle - pupil Zone Imaging Method - and unique technology - SLD - offers high accuracy and reliability in refraction measurement....
Company:NIDEK, Inc.

Iris Retractors

Description:... A miotic pupil is a commonly encountered complication in cataract surgery. Should a small pupil remain unresponsive to routine topical agents, many surgeons advocate the u...
Company:Katena Products, Inc.

Mini Quad® XL

Description:...recommended for evaluating vitreoretinal relationships of the entire fundus and in the management of dislocated lenses. It is the ideal lens for small pupil fundus viewing with the operating microscope. It provides a slightly wider field of view than the standard MiniQuad....
Company:Volk Optical, Inc.

QuadrAspheric®

Description:...dvantage over competitive wide field lenses for peripheral retinal viewing, reflection displacement, and ease of use. This lens is excellent for small pupil fundus examination and as a general diagnostic / laser lens delivering a quality combination of wide-field viewing, image magnification and maneuverab...
Company:Volk Optical, Inc.

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Pupil in Medical Definition

Pathology

... diseases Trachoma - Onchocerciasis Other Glaucoma - Floater - Leber's hereditary optic neuropathy - Red eye - Argyll Robertson pupil - Keratomycosis - Xerophthalmia - Aniridia v • d • e Circulatory system pathology ( I ) Hypertensi...
Pupil in Medical Dictionary

Pupil

The pupil is a circular opening located in the center of the iris of the eye that allows light to enter the retina. It appears black because most of the light entering the pupil is absorbed by the tissues inside the eye. In... Pupil is a Filipino rock band composed of Ely Buendia on f...

Sclera

...ne) do close blood vessels in sclera , removing bloodshot eyes. ... Ever wonder how your eyes work? This article for kids takes you from the pupil to the retina and beyond. ... Think of the sclera as your eyeball's outer coat. ... Notes on ophthalmology involving nonhuman animals ... T...

Retinoblastoma

...n, occurs most ... Retinoblastoma tumors originate in the retina, the light-sensitive layer of the ... In addition to retinoblastoma , a white pupil is a sign of several diseases and ... Retinoblastoma is a malignant tumor of childhood that grows in the retina. ... An overview of risks, ca...

Iris

... The iris is a membrane in the eye, responsible for controlling the diameter and size of the pupil and the amount of light reaching the retina. "Eye color" is the color of the iris , which can be green, blue, or brown. In some... Ir...

Eye movements

...... Eye movements are controlled by muscles innervated by cranial nerves III, IV and ... The movements of the eye include: adduction (the pupil directing toward the nose) ... Are eye movements considered essential to EMDR? - What has research determined about EMDR's eye movement c...

Dilation

... Pupillary response, dilation of the pupil of the eye. Cervical dilation , the widening o...the first ... List of 24 disease causes of pupil dilation , patient stories, diagnostic guides, medical books excerpts online about pupil dilation . Diagnostic checklist, medical ... ...
Pupil in Biological News

Bright lights, not-so-big pupils

...e cells bear on behavior, the researchers examined pupil constriction in mice that had been genetically alt...tting in the dark, the team measured the degree of pupil constriction. They found that, on average, roughly...vated melanopsin molecules are enough to trigger a pupil response. "But it takes a lot of light to activate...

Researchers advance knowledge of little 'nano-machines' in our body

...t, which allows the transmission of electrical signals along our nerve cells. The size of these small valves is about a million times smaller than the pupil of a human eye. The new technique will allow scientist to measure one single ion channel at the time and investigate how different parts inside the io...

Atomic-resolution views suggest function of enzyme that regulates light-detecting signals in eye

...ured a striking image of the iris of Heikaus' eye, photographed by UW ophthalmology imaging supervisor Brad Clifton. Superimposed in the center of the pupil was a three-dimensional structure of the GAF domain. In humans, GAF-containing proteins are rare. In plants and bacteria, GAF domains are widespre...

News tips from the Journal of Neuroscience

...gative pictures. In order to decrease the associated emotion, subjects were instructed to imagine, for example, a happy out come for a negative image. pupil dilation provided a measure of arousal. During the reappraisal, nondepressed subjects showed increased activity in the left prefrontal cortex (PFC), w...

Computer imaging assists with facial reconstructive surgery

...and the distance from the porion (the top of the external ear canal) to the pupil and to the pogonion (the most prominent point on the chin) was measured. T..., the porion to pogonion distance and the ratio of the distance between the pupil and the pogonion and the distance between the porion and the pogonion incre...

Transplanted photoreceptor precursor cells restore visual function in mice with retinal degeneration

...g or degenerating rods. The transplanted cells survived and were functional for the duration of the study. Scientists observed improvements including pupil response to light and response to light stimuli from ganglion cells, which form the circuitry to the brain. Swaroop explains that photoreceptors...

Train your brain to hear your friends at a party

...id: "When we switch on a bright light our eyes detect the increase in light levels and the brain sends a message to the eye to tell it to contract the pupil and let in less light. This is a feedback system where the brain is getting information from the eye about its surroundings, processing that informati...

Does missing gene point to nocturnal existence for early mammals?

...melanopsin. This melanopsin photoreceptor is not linked to sight but uses light for non-visual processes, such as regulating our day-night rhythms and pupil constriction." Although the melanopsin gene is present in all vertebrates, the version in mammals was unusually different to that found in fish, ...

First demonstration of 'teaching' in non-human animals

...pupil. In other words, the teacher provides information or guidance for the pupil at a rate suited to the pupil's abilities, and the pupil signals to the teacher when parts of the 'lesson' have been assimilated and...

Female butterflies go for sparkle -- not size -- when choosing to mate

...ize, quantity of eyespots on the wing, eyespot and pupil color, and pupil reflectivity. "Once we found a trait that appea...ing. But when the researchers painted the white pupil on the dorsal side with black paint, thereby elimi...
Pupil in Biological Technology

Leading Refractive Eye Surgery Experts from Trusted LASIK Surgeons Directory Educate Peers at ASCRS Annual Meeting

...keratome or a femtosecond laser. Dr. Manche's third study looked at pre-op pupil size effect on post-op visual performance such as glare, halos and quality of vision in myopic wavefront guided LASIK. The study found that pupil size has no effect on post op symptoms. His final study looked at a compar...

Satyam Wins Consumer Health World Award for Tele-Ophthalmology Program

...LV Prasad Eye Institute to diagnose patients in remote locations by virtually viewing their eyelids, conjunctivas, corneas, anterior chambers, irises, pupil reactions and lenses. When required, patients are referred for further tele-ophthalmology services or to secondary eye care centers, where they can re...

Nektar Presents Positive Results from Phase 1 Clinical Trial of NKTR-118 (oral PEG-naloxol) at American College of Clinical Pharmacology Meeting

...ntestinal motility test. Pupillometry, a measurement of the diameter of the pupil of the eye, was used to monitor antagonism of morphine-induced pupil constriction, a central nervous system (CNS) effect. Escalating single oral...

Before deciding how to pay for K-12 schools, let's determine what to buy

...oday in Wisconsin. It will ask: How much money per pupil is needed to educate students to Wisconsin's proficiency standards? The study will produce a per pupil cost figure, with adjustments for varying pupil needs as well as school and district contexts, and...

A new wide field-of-view confocal imaging system and its applications in drug discovery and pathology

...nd F*Theta (or F *Θ) lenses with the entrance pupil outside the lens system. A infinity-corrected lens...serted into the collimated beam. With the entrance pupil located outside the scan lens, it is possible to u...g mirror of the smallest size to fill the entrance pupil with the excitation beam. On the contrary, the ent...
Pupil in Biological Definition

Albinism

...e "white hair and red eyes" is not true. Colorless iris in humans is pale blue, not pink like in some animals, and the human eye is too deep for the pupil to appear red rather than black. Growth and development of children with albinism should be (and is) normal however, as should their general health...

Eye

... Conjunctiva Choroid Fovea Iris Lens Macula Optic disc Optic nerve Ora serrata Posterior chamber pupil Rectus medialis Retina Sclera Suspensory ligament Tapetum lucidum (not in humans) Vitreous humour Zonular fibers ...
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