Eyes a Window to Hearing Loss?
... that they could use a pair of specialized goggles to detect changes in pupil
They found that when a novel sound was introduced, the pupils in ... 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 ...
Ongoing Study Shows That Endovascular Therapy is Associated With High Cure Rate for Childhood Eye Cancer
... 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 ...
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 ...
Researchers develop light-treatment device to improve sleep quality in the elderly
... 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 ...
Kids Who Spend More Time Outdoors Have Better Vision
... 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 ...
Glaucoma Awareness Not Just for Humans
... 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 ...
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 ...
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 ...
Blinded by the Light? Vision Problems and Visual Discomfort Make Driving in the Dark Difficult, Uncomfortable for Most Americans
... 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 ...
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
The data showed distinctive patterns of activity in the ventromedial prefrontal cortex (VMPFC) and the right prefrontal cortex (PFC), ...
Pupil in Medical Technology
Positive Results for NKTR-118 (oral PEG-naloxol) Presented at American Academy of Pain Management Meeting
... GI motility test. Pupillometry, a measurement of the
diameter of the pupil
of the eye, was used to monitor antagonism of
constriction, a central nervous system (CNS) effect.
Escalating single ...
Omeros Announces Patient Enrollment in Phase 1/Phase 2 Study of OMS302
... 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 ...
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
noticeable, the tumor is already large.
Using moving X-rays, an interventional radiologist threads a catheter
up the femoral artery, guides it ...
Pupil in Medical Products
Brown Pupil Dilator
Description:... System Is Designed To Manually Dilate A Small pupil
With Greater Safety And Efficacy. The Bimanual ... Minimizing The Risk Of Inadvertent Capsule Tears. pupil
Stretching Is Also Maximized, With The pupil
Dilator (8-09133-A) Introduced Through The Phaco ...
Company:Rhein Medical, Inc.
OMEGA 180 Binocular Indirect Ophthalmoscope
Description:... HEINE's patented One-Step Small and Variable pupil
Control (U.S. Patent #4,684,227). Stereopsis is maximized in all pupil
sizes down to 1.2mm. Heine's unique Diffuser ... paths in the Omega 180 that provides true small pupil
performance with stereopsis. Because patients ...
Company:Heine USA Ltd.
VisPath Analyzer (VPA)
Description:... Evaluating pupil
response and eye movement is an important part of ... physical exams. Thats because eye movements and pupil
responses are controlled by an extremely ... and automates the examination of eye movement, pupil
function and visual ....
Company:Visual Pathways, Inc.
Morcher® Pupil Dilator
Description:... 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 ... for a single use. Indication: Expansion of the pupil
during phacoemulsification for patients who have ...
Company:FCI Ophthalmics Inc.
Perfect Pupil Injectable
Description:... Perfect pupil
Injectable was designed to provide the surgeon ... 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 consistantly, protects the iris sphincter ...
Description:... Pupillometer allows the measurement of the pupil
in a totally dark environment. It also allows the possibility to test the pupil
reaction with and without glare, resulting in the min/max and mean diameter of the pupil
under different illumination ....
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 ...
Company:Katena Products, Inc.
Description:... VitreoFundus® provides ultra wide-field viewing and outstanding small pupil
ability for quick and comprehensive fundus exams at the slit lamp. It has ... small pupils without the hassle and steep learning curve of typical small pupil
lenses. Delivering an incredible 124° dynamic field of view with ample ...
Company:Volk Optical, Inc.
Model Practice Eye
Description:... and shape and the flexibility and texture of the sclera. The lens and pupil
arrangement simulate the optics of the human eye, thus permitting a ... through the indidrect ophthalmoscope.
The model eye is available in pupil
diameters of : 2, 4, 6, and 8 mm.
The fundus of each eye is ...
Company:GWB International, Ltd.
Description:... area which is being stimulated. Besides it also includes the refractive pupil
camera enabling the examiner to switch between the pupil
picture and the fundus image on the computer screen. This system is ...
Pupil in Medical Definition
Trachoma - Onchocerciasis
Glaucoma - Floater - Leber's hereditary optic neuropathy - Red eye - Argyll Robertson pupil
- Keratomycosis - Xerophthalmia - Aniridia
v • d • e
Circulatory system pathology ( I )
Pupil in Medical Dictionary
... ... There are many different causes for white pupil
, which are described below. Other conditions can also mimic white pupil
. For example a cloudy cornea (usually, the ... ) may produce an appearance similar to a white pupil
... that provides the eye its color and forms the pupil
of the eye . Iritis Related Category: ... pigmented portion of the eye surrounding the pupil
. Iritis is a form of uveitis and refers ... the eye . (The opening of the iris forms the pupil
.) Search All of MedicineNet For: search help ...
... black notch of varying depth at the edge of the pupil
, giving the pupil
an irregular shape. Iris Iritis is ... colored curtain of the eye that surrounds the pupil
. The iris is made up of muscular fiber s ...
... lens of the eye is located behind the pupil
and iris . It should be clear. The lens ... transparent organ lying behind the iris and pupil
that focuses light on the retina of the eye . ... is an elliptical structure that sits behind the pupil
and is normally transparent. The function of the ...
- white spots Definition: In this condition, the pupil
of the eye , which is normally black, appears white. pupil
dilation : This examination enables your eye ...
... r reflex; paradoxical pulse ; paradoxical pupil
; paradoxical pupil
lary phenomenon; paradoxical pupil
lary reflex; paradoxical reflex; paradoxical ...
... r reflex; paradoxical pulse ; paradoxical pupil
; paradoxical pupil
lary phenomenon; paradoxical pupil
lary reflex; paradoxical reflex; paradoxical ...
Visual acuity test
... measures vision ability at various distances. pupil
dilation - the pupil
is widened with eyedrops to allow a close-up ... cataracts by widening (dilating) your pupil
with medication and examining your eye . You ...
... 7) cornea - the clear, dome-shaped surface that covers the iris and pupil
. A contact lens rests on this part of the eye . Axokine ( cilia ry ... the iris called the cilia ry processes. The fluid flows through the pupil
and exits the eye through the angle. The lens sits behind the iris ...
... that is present at birth ). When one shines a b right light on the pupil
, it normally appears red. In leukocoria, the light makes the pupil
look white. This occurs with a number of eye disease s including ...
Pupil in Biological News
Bright lights, not-so-big pupils
... cells bear on behavior, the researchers examined pupil
constriction in mice that had been genetically ... in the dark, the team measured the degree of pupil
constriction. They found that, on average, ... melanopsin molecules are enough to trigger a pupil
response. "But it takes a lot of light to ...
Researchers advance knowledge of little 'nano-machines' in our body
... 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 ...
Atomic-resolution views suggest function of enzyme that regulates light-detecting signals in eye
... 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 ...
News tips from the Journal of Neuroscience
... 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), ...
Female butterflies go for sparkle -- not size -- when choosing to mate
... quantity of eyespots on the wing, eyespot and pupil
color, and pupil
"Once we found a trait that ...
But when the researchers painted the white pupil
on the dorsal side with black paint, thereby ...
Computer imaging assists with facial reconstructive surgery
... 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. ... 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 ...
First demonstration of 'teaching' in non-human animals
... 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 ...
Transplanted photoreceptor precursor cells restore visual function in mice with retinal degeneration
... 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 ...
Train your brain to hear your friends at a party
... "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 ...
Does missing gene point to nocturnal existence for early mammals?
... This melanopsin photoreceptor is not linked to sight but uses light for non-visual processes, such as regulating our day-night rhythms and pupil
Although the melanopsin gene is present in all vertebrates, the version in mammals was unusually different to that found in fish, ...
Pupil in Biological Technology
Leading Refractive Eye Surgery Experts from Trusted LASIK Surgeons Directory Educate Peers at ASCRS Annual Meeting
... 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 ...
Nektar Presents Positive Results from Phase 1 Clinical Trial of NKTR-118 (oral PEG-naloxol) at American College of Clinical Pharmacology Meeting
... motility test.
Pupillometry, a measurement of the diameter of the pupil
of the eye, was
used to monitor antagonism of morphine-induced pupil
central nervous system (CNS) effect. Escalating single ...
Satyam Wins Consumer Health World Award for Tele-Ophthalmology Program
... 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 ...
Before deciding how to pay for K-12 schools, let's determine what to buy
... 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, ...
A new wide field-of-view confocal imaging system and its applications in drug discovery and pathology
... F*Theta (or F *Θ) lenses with the entrance pupil
outside the lens system. A infinity-corrected ... into the collimated beam. With the entrance pupil
located outside the scan lens, it is possible to ... mirror of the smallest size to fill the entrance pupil
with the excitation beam. On the contrary, the ...
Pupil in Biological Definition
... "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 ...
Tapetum lucidum (not in humans)