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  2. Pupillary response - Wikipedia

    en.wikipedia.org/wiki/Pupillary_response

    Dilation and constriction of the pupil. Pupillary response is a physiological response that varies the size of the pupil, via the optic and oculomotor cranial nerve.. A constriction response (), [1] is the narrowing of the pupil, which may be caused by scleral buckles or drugs such as opiates/opioids or anti-hypertension medications.

  3. Mydriasis - Wikipedia

    en.wikipedia.org/wiki/Mydriasis

    Mydriasis is the dilation of the pupil, usually having a non-physiological cause, [3] or sometimes a physiological pupillary response. [4] Non-physiological causes of mydriasis include disease, trauma, or the use of certain types of drug.

  4. Miosis - Wikipedia

    en.wikipedia.org/wiki/Miosis

    The ganglion cells give information about ambient light levels, and react sluggishly compared to the rods and cones. Signals from photosensitive ganglion cells have multiple functions including acute suppression of the hormone melatonin, entrainment of the body's circadian rhythms and regulation of the size of the pupil.

  5. Atropine - Wikipedia

    en.wikipedia.org/wiki/Atropine

    Topical atropine is used as a cycloplegic, to temporarily paralyze the accommodation reflex, and as a mydriatic, to dilate the pupils. [15] Atropine degrades slowly, typically wearing off in 7 to 14 days, so it is generally used as a therapeutic mydriatic, whereas tropicamide (a shorter-acting cholinergic antagonist) or phenylephrine (an α-adrenergic agonist) is preferred as an aid to ...

  6. Pilocarpine - Wikipedia

    en.wikipedia.org/wiki/Pilocarpine

    It is used to prevent or treat dry mouth, particularly in Sjögren syndrome, but also as a side effect of radiation therapy for head and neck cancer. [17] It may be used to help differentiate Adie syndrome from other causes of unequal pupil size. [18] [19] It may be used to treat a form of dry eye called aqueous deficient dry eye (ADDE) [20]

  7. Tropicamide - Wikipedia

    en.wikipedia.org/wiki/Tropicamide

    Tropicamide, sold under the brand name Mydriacyl among others, is a medication used to dilate the pupil and help with examination of the eye. [3] Specifically it is used to help examine the back of the eye. [4] It is applied as eye drops. [3] Effects occur within 40 minutes and last for up to a day. [3]

  8. Fentanyl in other drugs: Why do drug dealers mix them ... - AOL

    www.aol.com/fentanyl-other-drugs-why-drug...

    Dealers are mixing it with other illicit drugs and selling it. ... An overdose can cause stupor, changes in pupil size, clammy skin, cyanosis, coma and respiratory failure leading to death.

  9. Cycloplegia - Wikipedia

    en.wikipedia.org/wiki/Cycloplegia

    All cycloplegics are also mydriatic (pupil dilating) agents and are used as such during eye examination to better visualize the retina. When cycloplegic drugs are used as a mydriatic to dilate the pupil, the pupil in the normal eye regains its function when the drugs are metabolized or carried away.