In 2002, Hattar and his colleagues showed that melanopsin plays a key role in a variety of photic responses, including pupillary light reflex, and synchronization of the biological clock to daily light-dark cycles.
22.
The prognosis for a replaced eye is determined by the extent of damage to the cornea and sclera, the presence or absence of a pupillary light reflex, and the presence of ruptured rectus muscles.
23.
The simplest " eyes ", such as those in microorganisms, do nothing but detect whether the surroundings are light or suprachiasmatic nuclei to effect circadian adjustment and to the pretectal area to control the pupillary light reflex.
24.
A small percentage of retinal ganglion cells contribute little or nothing to vision, but are themselves photosensitive; their axons form the retinohypothalamic tract and contribute to circadian rhythms and pupillary light reflex, the resizing of the pupil.
25.
Hattar concluded that melanopsin is the photopigment in a small subset of RGCs that contributes to the intrinsic photosensitivity of these cells and is involved in their non-image forming functions, such as photic entrainment and pupillary light reflex.
26.
His name is associated with several medical eponyms, that include : " Haab's reflex ", which is another name for pupillary light reflex, and " Haab's magnet ", a powerful magnet used for removing metallic particles from the eye.
27.
Neck stiffness usually presents six hours after initial onset of SAH . Isolated dilation of a pupil and loss of the pupillary light reflex may reflect brain herniation as a result of rising intracranial pressure ( pressure inside the skull ).
28.
:: Well, the most " classic " exam you see in movies and TV all the time when a doctor shines a pen light into someone's eye is a Pupillary light reflex test, which is not an eye exam but a neurological test.
29.
He has greatly elucidated the properties of the light responses and their underlying phototransduction mechanisms in retinal intrinsically-photosensitive retinal ganglion cells ( which express the photopigment, melanopsin, to mediate mostly non-image vision such as pupillary light reflex and photoentrainment of the circadian rhythm ).
30.
The word " reflex " is commonly used for many responses that involve the brain, for example the optokinetic reflex, in which the eyes automatically move to track a moving object; or the pupillary light reflex; or the accommodation reflex . talk ) 14 : 08, 22 April 2015 ( UTC)
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