One of the autonomous control functions of the eye is to regulate light input to suit the conditions for best visual acuity. This is done by changing the size of the pupil. Losing an eye is devastating at any age. It has great impact on one's self image, self confidence and self ...
The apparently black circular opening in the center of the iris of the eye, through which light passes to the retina. [Middle English, from Old French pupille, from Latin pūpilla, little doll, pupil of the eye (from the tiny image reflected in it); see pupil1.] pu′pi·lar, pu′pil...
Pupil in an eye that is blind because of ocular or optic nerve disease; this pupil will not contract to light except when the normal fellow eye is stimulated with light. Medical Dictionary for the Health Professions and Nursing © Farlex 2012 ...
Pupils respond to more than just light, and collecting this objective data may be a useful alternative or addition to subjective measures. Some cognitive and emotional events occur outside of our conscious control and can cause pupils to constrict and expand. UX researchers can record data from t...
The iris serves to regulate the amount of light that enters the posterior segment through the central aperture, the pupil. Pupil size is a function of the sphincter muscle, which runs primarily horizontally in the horse, and the dilator muscle which runs radially deep in the iris. The pupil ...
PURPOSE: A molecular capsule binder using tetrahydrazide cavitand is provided to have multi-functional molecular capsule which is able to form complex with neutral, anionic and cationic guest molecules.;CONSTITUTION: A tetrahydrazide cavitand of structural formula II forms molecular capsule in which benz...
Holmes Adies pupil is a type of pupil with parasympathetic denervation in which the affected pupil is large, poorly reacting to light, but reacting better to accommodation. The pupil is supersensitive to cholinergics but dilates to mydriatics normally. Holmes Adie pupil by itself is rare. ...
Tonic pupil, or Adie's pupil, is an autonomic disorder due to a loss of function of parasympathetic ciliary ganglion cells. Upon examination, the pupil appears tonically dilated and shrinks poorly to light, while reacting better to accommodation stimulus. The denervated iris sphincter is very ...
RESULTS: The patient's larger pupil was read as unreactive by the pupillometer but constricted 1 mm over 7-9 s of continuous light stimulation. CONCLUSIONS: While pupillometry assessment is a valuable adjunct to the manual pupillary assessment, this case demonstrates that nonre...