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Left direct pupillary reflex is the left pupil's response to light entering the left eye, the ipsilateral eye. Left consensual pupillary reflex is the left pupil's indirect response to light entering the right eye, the contralateral eye. Right direct pupillary reflex is the right pupil's response to light entering the right eye, the ipsilateral ...
The pupillary reflex results in the pupil constricting (left) and dilating (right) These include the pupillary light reflex and accommodation reflex . Although the pupillary response , in which the pupil dilates or constricts due to light is not usually called a "reflex", it is still usually considered a part of this topic.
A consensual response is any reflex observed on one side of the body when the other side has been stimulated.. For example, if an individual's right eye is shielded from light, while light shines into the left eye, constriction of the right pupil will still occur (the consensual response), along with the left (the direct response).
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.
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.
Pupillary accommodation reflex — a reduction of pupil size in response to an object coming close to the eye. Pupillary light reflex — a reduction of pupil size in response to light. Rectoanal inhibitory reflex - a transient relaxation of the internal anal sphincter in response to rectal distention.
Normally, as part of the pupillary light reflex, the pupil dilates in the dark and constricts in the light to respectively improve vividity at night and to protect the retina from sunlight damage during the day. A mydriatic pupil will remain excessively large even in a bright environment. The excitation of the radial fibres of the iris which ...
For an adequate test, vision must not be entirely lost. In dim room light, the examiner notes the size of the pupils. The patient is asked to gaze into the distance, and the examiner swings the beam of a penlight back and forth from one pupil to the other, and observes the size of pupils and reaction in the eye that is lit.
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