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  • examination
  • Ideally, the eye examination consists of an external examination, followed by specific tests for visual acuity, pupil function, extraocular muscle motility, visual fields, intraocular pressure and ophthalmoscopy through a dilated pupil. (wikipedia.org)
  • A minimal eye examination consists of tests for visual acuity, pupil function, and extraocular muscle motility, as well as direct ophthalmoscopy through an undilated pupil. (wikipedia.org)
  • size
  • In general, the increase in overall wave aberration with pupil size has been reported to increase to approximately the second power of the pupil radius. (wikipedia.org)
  • greater
  • At night, the dark-adapted pupil is wide open so flash blindness has a greater effect and lasts longer. (wikipedia.org)
  • dilate the pupil
  • Phenylephrine is a selective α1-adrenergic receptor agonist of the phenethylamine class used primarily as a decongestant, as an agent to dilate the pupil, and to increase blood pressure. (wikipedia.org)
  • Phenylephrine is used as an eye drop to dilate the pupil to facilitate visualization of the retina. (wikipedia.org)
  • As a result of this experiment he recommended that an extract, which contained the active ingredient, the alkaloid physostigmine, be used to reverse the action of atropine, which had been used in fundoscopy to dilate the pupil since Helmholtz's introduction of the ophthalmoscope in 1851. (wikipedia.org)
  • reflects
  • Generally it is a physical exam done on neonates and children by healthcare providers but occasionally occurs in flash photography seen when the pupil does not have enough time to constrict and reflects the fundus known as the red-eye effect. (wikipedia.org)
  • response
  • An automated pupillometer also provides a reliable and effective way to quantitatively classify and trend the pupil light response. (wikipedia.org)
  • The pupil response has also been found to reflect long-term memory processes both at encoding, predicting the success of memory formation, and at retrieval reflecting the operation of different recognition outcomes. (wikipedia.org)
  • Left pupillary reflex refers to the response of the left pupil to light, regardless of which eye is exposed to a light source. (wikipedia.org)
  • A consensual pupillary reflex is response of a pupil to light that enters the contralateral (opposite) eye. (wikipedia.org)
  • seen
  • 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)
  • size
  • In any human age group there is however 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)
  • The function of multifocal IOL depends on the pupil size for refractive types. (wikipedia.org)
  • Independent of examiner, an automated pupillometer eliminates variability and subjectivity, expressing pupil reactivity numerically so that both pupil size and reactivity can be trended for changes, just like other vital signs. (wikipedia.org)
  • known
  • 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)
  • He also described a symptom of neurosyphilis that affects the pupils of the eye, a condition subsequently known as Argyll Robertson pupil. (wikipedia.org)
  • accommodation
  • In 1869 he published a paper giving the first description of unusual reactions of the pupils to light and accommodation in patients with tabes dorsalis(syphilis affecting the spinal cord). (wikipedia.org)
  • side
  • In contrast, the terms direct and consensual refers to the side where the light source comes from, relative to the side of the reacting pupil. (wikipedia.org)
  • patient
  • Automated pupillometry removes subjectivity from the pupillary evaluation, providing more accurate and trendable pupil data, and allowing earlier detection of changes for more timely patient treatment. (wikipedia.org)
  • Pupil data can be automatically uploaded to the patient record, eliminating the possibility of data entry error. (wikipedia.org)
  • appears
  • 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)
  • distance
  • 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)
  • different
  • For example, at the peak age of 15, the dark-adapted pupil can vary from 4 mm to 9 mm with different individuals. (wikipedia.org)