Diseases
mydriasis
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Overview
Pupils are the black circles in your eyes. They gather light and bring it to the retina to form images. Typically, the pupils dilate, or widen, in response to low light so they can collect more light. Sometimes pupils will dilate for a reason unrelated to the levels of light in the environment.
Symptoms
- pupil is dilated and doesn’t respond to light
Causes
- anticholinergics
- injury to the eye
- increased oxytocin
Risk factors
- anti-nausea medications.
- anti-seizure medications.
- botulinum toxin.
Diagnosis
- physical exam.
- medical history.
Medicines used
Frequently asked questions
What is mydriasis?
Pupils are the black circles in your eyes. They gather light and bring it to the retina to form images. Typically, the pupils dilate, or widen, in response to low light so they can collect more light. Sometimes pupils will dilate for a reason unrelated to the levels of light in the environment.
What are the symptoms of mydriasis?
pupil is dilated and doesn’t respond to light
What causes mydriasis?
anticholinergics; injury to the eye; increased oxytocin
Which medicines are used for mydriasis?
atropine, cyclopentolate, epinephrine, tropicamide
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.