AnatomyDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPsychiatry and PsychologyPhenomena and ProcessesDisciplines and OccupationsAnthropology, Education, Sociology and Social PhenomenaTechnology, Industry, AgricultureNamed Groups
PupilPupil DisordersTonic PupilReflex, PupillaryMydriaticsTropicamideMydriasisIrisAnisocoriaMiosisAccommodation, OcularAdie SyndromeRefraction, OcularAberrometrySchoolsEye ColorCyclopentolateRefractive ErrorsCorneal TopographyLightVisual AcuityStudentsOptics and PhotonicsGlarePresbyopiaFacultyAstigmatismDiagnostic Techniques, OphthalmologicalEye, Artificial
Vertical slit pupilsSlitStructuresRefractiveObstructionConstrictionPhysiologicalPalpableIrisLandmarksCorneaDilationOpticMusclesEyelidsLensComplicationsInnervationOrbitAngleEntersPassageDifferencesNormalDropsApertureRetinaCircleSpeciesAnatomyVisionLightEyesSizeContractSchoolHumanStageCasesHistoryPainFactDarkWeeksLead
Vertical slit pupils1
  • some cats, reptiles, and foxes have vertical slit pupils, goats have horizontally oriented pupils, and some catfish have annular types. (wikipedia.org)
Slit9
  • If you click for a larger view you can just barely make out the slit pupils. (koryoswrites.com)
  • Again, in all these groups, slit pupils evolved separately . (koryoswrites.com)
  • So what advantages do slit pupils confer? (koryoswrites.com)
  • Slit pupils are found most often in animals with eyes that are exposed to highly variable light conditions- i.e., nocturnal or crepuscular animals. (koryoswrites.com)
  • Slit pupils allow the iris to contract or expand more dramatically- a human's round pupil can expand to allow light to be 10-fold more intense compared to its smallest size, while a cat's pupil expands to 135-fold intensity. (koryoswrites.com)
  • So what advantages, other than dramatic dilation, does the vertical slit pupil allow? (koryoswrites.com)
  • Recently, a theory has been proposed that the slit pupil aids predatory animals in seeing color in different light conditions. (koryoswrites.com)
  • Let's now go back to the terrestrial eye and compare the constriction of a slit pupil with that of a round pupil. (koryoswrites.com)
  • 6/12 in one or both eyes underwent detailed examination including applanation tonometry, dilated slit lamp biomicroscopy, lens grading and fundus photography. (biomedcentral.com)
Structures4
  • Perhaps because he analyzed anatomical structures in terms of their purpose, he interpreted the function of the valves as slowing down the influx of blood in order to distribute it more evenly to the various parts of the body. (sophiararebooks.com)
  • According to an article on Drug Addiction published in The New England Journal of Medicine by Jordi Camí, M.D., Ph.D., and Magí Farré, M.D., Ph.D. genetic factors, receptor-mediated processes, and anatomical structures all contribute to the development of addiction. (lantanarecovery.com)
  • All anatomical structures of the orbit can give rise to neoplasia. (medscape.com)
  • Direct extension from contiguous anatomical structures, lymphoproliferative disorders, and hematogenous metastasis results in secondary orbital invasion. (medscape.com)
Refractive2
  • Pre-testing collects basic refractive and anatomical data. (bainbridgeeyecare.com)
  • Cataract surgery in second eye was perform ed in two weeks without complications which improve d the vision, anatomical and refractive conditions of both eyes. (ocnifestival.cz)
Obstruction2
  • Medieval physicians understood that the presence of a fixed dilated pupil indicated optic nerve obstruction, preventing the passage of visual spirit, and that cataract surgery in such cases would not restore sight. (nature.com)
  • DURYSTA should be used with caution in patients with narrow angles or anatomical angle obstruction. (nih.gov)
Constriction3
Physiological1
  • The manikin is designed according to neonatal anatomical and physiological characteristics, adopting imported environmental material. (tech-model.com)
Palpable1
  • The first and foremost medium through which the influence of Padua on Harvey becomes palpable is the personality and teaching of the anatomical luminary of the school, Hieronymous Fabricius of Aquapendente (1537-1619). (sophiararebooks.com)
Iris12
Landmarks1
  • It has the characteristics of accurate anatomical landmarks, real simulation, durability, and no deformation. (cqscopelab.com)
Cornea3
  • The image of the pupil as seen from outside the eye is the entrance pupil, which does not exactly correspond to the location and size of the physical pupil because it is magnified by the cornea. (wikipedia.org)
  • While tears play a vital role in hydrating the eye and keeping the cornea nourished with oxygen, the excessively watery eyes of your furry little friend might be associated with a variety of medical conditions ranging from common allergies to more serious anatomical abnormalities. (petcarerx.com)
  • On examination the right pupil is fixed and mid-dilated, and the cornea is slightly hazy. (auckland.ac.nz)
Dilation2
  • citation needed] If the drug pilocarpine is administered, the pupils will constrict and accommodation is increased due to the parasympathetic action on the circular muscle fibers, conversely, atropine will cause paralysis of accommodation (cycloplegia) and dilation of the pupil. (wikipedia.org)
  • Dilation of the pupil is mydriasis. (wikipedia.org)
Optic1
  • This condition is typified by chronically widened pupils due to the decreased ability of the optic nerves to respond to light. (wikipedia.org)
Muscles1
Eyelids1
Lens1
  • However, during the operation, after removing the lens, there was a significant improvement in the anatomical proportions of the eye. (ocnifestival.cz)
Complications3
  • Multiple DACA aneurysms are a case of both clinical and anatomical rarity and to avoid complications in the clinical course, one must be judicious about the time spent between symptom onset and embolization. (surgicalneurologyint.com)
  • Outcome measures evaluated were anatomical results, visual outcomes and complications of the surgery. (bvsalud.org)
  • CONCLUSIONS: Microincision pars plana vitrectomy is an effective surgical method of primary treatment for rhegmatogenous retinal detachment with good anatomical and visual outcomes with minimal complications. (bvsalud.org)
Innervation1
  • Infection, incorrect selection of local anesthetic solution, technical errors, anatomical differences with supplementary innervation, and patient anxiety are all possible reasons of failure. (advance-esthetic.us)
Orbit1
  • Since the orbit is a relatively small anatomical area with little wasted space, space-occupying lesions that increase orbital volume may result in proptosis of the globe and may adversely affect visual and extraocular muscle function. (medscape.com)
Angle1
  • In high hyperopia cases one should always consider narrow angle and risk of angle closure when dilating their pupil. (ocnifestival.cz)
Enters1
Passage1
  • At night the pupils dilate to permit the passage of available light (moonlight) thus allowing the gecko to see while it searches for food. (whozoo.org)
Differences1
  • The reverse is true, so control of pupil size is controlled by differences in contraction intensity of each muscle. (wikipedia.org)
Normal2
  • In normal lighting, people affected by this condition normally have dilated pupils, and bright lighting can cause pain. (wikipedia.org)
  • If you do not already have sunglasses, we will provide you with disposable sun protection to wear until your pupils return to normal (generally about 3-4 hours without reversal drops and about one hour with reversal drops). (bainbridgeeyecare.com)
Drops1
Aperture1
  • This complex anatomical area was first described by Whitnall to resemble a pear, with its widest aperture anterior and narrowing posteriorly. (medscape.com)
Retina1
  • Essentially what the pupil does is allow light to pass through the eye and onto the retina at the back of the eye. (koryoswrites.com)
Circle2
  • Patient groups were compared regarding gender, age, arterial vasculature side, anatomical location, diameter, preoperative DSA appearance, aneurysmal and anatomical Circle of Willis variations (CWV) co-existence. (hippokratia.gr)
  • Excuse my terrible paint art, but imagine that circle is the pupil and the lines are red and green light wavelengths. (koryoswrites.com)
Species2
  • The exception to this are shark and ray species, which have evolved pupils that can contract or expand. (koryoswrites.com)
  • Many nocturnal species have round pupils which are actually quite good at contracting to very small sizes. (koryoswrites.com)
Anatomy1
  • It must be remembered, however, that Fabricius, the greatest pupil of the great Falloppio, the man who founded the celebrated Paduan Anatomical Theatre and School, could not have failed to direct his pupil's interest into the proper channels of dynamic anatomy and to the very foci of his lifelong endeavor - the blood vessels on the one hand and the generation of animals on the other. (sophiararebooks.com)
Vision2
  • Common symptoms of glaucoma other than excessive eye discharge include dilated pupils, clouded eyes, bulging of the eyes, a sensation of high pressure on the eyes, abnormal blinking and loss of vision. (petcarerx.com)
  • With it, there are a whole bunch of different ways that animals can shape their vision- and their pupil- to their advantage. (koryoswrites.com)
Light5
  • The pupils have 4 small pinhole openings that shut out the light during the day. (whozoo.org)
  • It appears black because light rays entering the pupil are either absorbed by the tissues inside the eye directly, or absorbed after diffuse reflections within the eye that mostly miss exiting the narrow pupil. (wikipedia.org)
  • The pupil gets wider in the dark and narrower in light. (wikipedia.org)
  • conversely, in dim light the pupil expands to increase the amount of light coming in. (koryoswrites.com)
  • In fish eyes, this detriment can be corrected by having a pupil with different focal lengths- i.e., different sharpness in the way light is angled towards the fovea. (koryoswrites.com)
Eyes1
  • Objective of this study is to evaluate anatomical and visual outcomes of microincision pars plana vitrectomy in eyes with rhegmatogenous retinal detachment. (bvsalud.org)
Size3
  • However, in any human age group there is considerable variation in maximal pupil size. (wikipedia.org)
  • After 25 years of age, the average pupil size decreases, though not at a steady rate. (wikipedia.org)
  • When this muscle contracts, it reduces the size of the pupil. (wikipedia.org)
Contract1
  • The dilator pupillae, innervated by sympathetic nerves from the superior cervical ganglion, cause the pupil to dilate when they contract. (wikipedia.org)
School1
  • Being desirous at length of some settled occupation, he obtained from his brother William permission to aid, under Mr Symonds, in making dissections in his anatomical school, then the most celebrated in London, intending, should he be unsuccessful there, to enter the army. (1902encyclopedia.com)
Human1
Stage2
  • At this stage the pupils do not remain completely still, therefore may lead to oscillation, which may intensify and become known as hippus. (wikipedia.org)
  • The disadvantages of epidural anaesthesia are that a few wom en com plain of dizziness or shivering, and that it m ay increase the length of the second stage and result in a rise in operative vaginal deliveries. (dnahelix.com)
Cases2
  • Pupil were dilated in cases where there was media haze in un-dilated cases. (bvsalud.org)
  • Anatomical success was achieved in 91.8% of cases (45/49). (bvsalud.org)
History1
  • Though they escaped Choulant's notice, they are among the rarest and most beautiful works in the history of anatomical illustration. (sophiararebooks.com)
Pain1
  • Epidural anaesthesia is the m ost efficient way of relieving the ache of childbirth, and provides com plete relief of contraction pain in 95% of labouring wom en. (dnahelix.com)
Fact1
  • In fact, round pupils provide the clearest nighttime images when compared to all other shapes. (koryoswrites.com)
Dark1
  • In the dark it will be the same at first, but will approach the maximum distance for a wide pupil 3 to 8 mm. (wikipedia.org)
Weeks1
  • Twelve weeks after giving delivery, 5% of wom en nonetheless expertise som e degree of ache and 15% have perineal discom fort. (dnahelix.com)
Lead1
  • In it the Aristotelian lead and especially the spirit of comparative anatomical enquiry is just as recognizable in Harvey's work. (sophiararebooks.com)