pupillary dilation

См. также в других словарях:

• Pupillary reflex — refers to one of the reflexes associated with pupillary function. Types include: Pupillary light reflex Accommodation reflex Although pupillary dilation is not usually called a reflex , it is still usually considered a part of this topic.… …   Wikipedia

• Dilation — (or dilatation) refers to an enlargement or expansion in bulk or extent, the opposite of contraction. It derives from the Latin dilatare, to spread wide . In physiology: Pupillary dilation, dilation of the pupil of the eye Cervical dilation, the… …   Wikipedia

• Pupillary response — or dilation of the pupil is a physiological response that varies the size of the pupil of the eye via the iris dilator muscle. It can have a variety of causes. It may be an involuntary reflex reaction to exposure to light. Or it may indicate… …   Wikipedia

• Marcus Gunn pupillary phenomenon — with unilateral optic nerve or retinal disease, a difference between the pupillary reflexes of the two eyes when a light is shone alternately into each one with the other eye covered; on the affected side there is abnormally slight contraction or …   Medical dictionary

• reversed pupillary reflex — any abnormal pupillary reflex opposite to one that occurs normally, such as dilation of the pupil when the retina is stimulated by light. Called also paradoxical pupillary r. or phenomenon …   Medical dictionary

• retrobulbar pupillary reflex — slight dilation of the pupil, which contracts under light stimulation and then dilates while the light stimulation is still present …   Medical dictionary

• Mydriasis — Dilation of the pupils induced by eyedrops. The opposite of miosis. * * * Dilation of the pupil. [G.] alternating m. m. alternately affecting each eye. amaurotic m. a moderate widening of both pupils resulting from impaired visual input from one… …   Medical dictionary

• eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

• Mydriasis — Dilated pupil redirects here. This term also arises in eye examinations. Mydriasis Classification and external resources Pupil dilated for examination by optometrist. ICD 10 …   Wikipedia

• Pupil — The opening of the iris. The pupil may appear to open (dilate) and close (constrict) but it is really the iris that is the prime mover; the pupil is merely the absence of iris. The pupil determines how much light is let into the eye. Both pupils… …   Medical dictionary

• nervous system, human — ▪ anatomy Introduction       system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …   Universalium