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  2. Pupillary light reflex - Wikipedia

    en.wikipedia.org/wiki/Pupillary_light_reflex

    The pupillary light reflex (PLR) or photopupillary reflex is a reflex that controls the diameter of the pupil, in response to the intensity of light that falls on the retinal ganglion cells of the retina in the back of the eye, thereby assisting in adaptation of vision to various levels of lightness/darkness.

  3. Pupillary response - Wikipedia

    en.wikipedia.org/wiki/Pupillary_response

    The responses can have a variety of causes, from an involuntary reflex reaction to exposure or inexposure to light—in low light conditions a dilated pupil lets more light into the eye—or it may indicate interest in the subject of attention or arousal, sexual stimulation, [4] uncertainty, [5] decision conflict, [6] errors, [7] physical ...

  4. Pupillary reflex - Wikipedia

    en.wikipedia.org/wiki/Pupillary_reflex

    Next, constriction of the pupil occurs. Because the lens cannot refract light rays at the edges well, the image produced by the lens is blurry around the edges so the pupil constricts when one attempts to focus on nearby objects. [citation needed] Lastly, accommodation of the lens occurs. This is an alteration in the curvature of the lens that ...

  5. Adie syndrome - Wikipedia

    en.wikipedia.org/wiki/Adie_syndrome

    Adie syndrome, also known as Holmes–Adie syndrome, is a neurological disorder characterized by a tonically dilated pupil that reacts slowly to light but shows a more definite response to accommodation (i.e., light-near dissociation). [1] It is frequently seen in females with absent knee or ankle jerks and impaired sweating.

  6. 7 reasons why your pupils may be dilated, from low light to ...

    www.aol.com/news/7-reasons-why-pupils-may...

    When pupils are dilated, it means that they grow larger in size. This can happen for a number of different reasons, including drug use and arousal. 7 reasons why your pupils may be dilated, from ...

  7. Relative afferent pupillary defect - Wikipedia

    en.wikipedia.org/wiki/Relative_afferent_pupillar...

    The Marcus Gunn pupil is a relative afferent pupillary defect indicating a decreased pupillary response to light in the affected eye. [3] In the swinging flashlight test, a light is alternately shone into the left and right eyes. A normal response would be equal constriction of both pupils, regardless of which eye the light is directed at.

  8. Accommodation reflex - Wikipedia

    en.wikipedia.org/wiki/Accommodation_reflex

    Light from a single point of a distant object and light from a single point of a near object being brought to a focus. The accommodation reflex (or accommodation-convergence reflex) is a reflex action of the eye, in response to focusing on a near object, then looking at a distant object (and vice versa), comprising coordinated changes in vergence, lens shape (accommodation) and pupil size.

  9. Kids' eyesight is getting worse. Special contact lenses may ...

    www.aol.com/kids-eyesight-getting-worse-special...

    Another way of preventing myopia progression includes using low-dose atropine eye drops, which are typically used to help dilate pupils during an eye exam, according to HealthyChildren.org.