Pupil dilation.
Dilation of the pupils of the eyes, miosis.
An enlargement of the pupil of the eye.
Dilation of the pupil of the eye, caused by muscle action pulling the ins outward and enlarging the pupil; it occurs in response to a decrease in light or the action of certain drugs.
Widening of the pupil of the eye. Mydriasis may occur normally, as in dim light, or it may occur as a side effect of drug therapy. Mydriatic drugs, such as atropine, are deliberately used by ophthalmologists (eye doctors) to dilate the pupils of the eyes, so that the retina and optic disc can be examined more easily. Mydriatic drugs are also used to treat certain eye inflammations.
Dilation or widening of the pupil of the eye. Occurring naturally when it is dark, or when someone is emotionally aroused, mydriasis can also result from the administration of atropine eye drops. Alcohol consumption also has a mydriatic effect.
The expansion or widening of the eye’s pupil is known as mydriasis. This phenomenon takes place in dim lighting, during periods of emotional excitement, following the application of specific eye drops (like those containing atropine), and also after consuming alcohol.