Literally meaning: “process to be a red hot mass ”
Origin: Anc Greek
μυδρίασις/mydriasis(=excessive enlargement of the pupil) > μύδρος>mydros(=red hot mass or rock fragments that are ejected violently from a volcano crater)
The use of the word is attributed to Greek physician Galen of Pergamon (130–200 AD) but Hippocrates (460BC-ca.370BC) is said to have used a cautery tool (mydros) as an instrument to cause pupil dilation because of fear.
Mydriasis is the persistent and excessive dilation of the pupil (>6mm) that does not return to normal state even under influence of light. Mydriasis is caused usually by use of certain drugs or trauma to the eye. In addition , the ophthalmologist may
uce mydriasis, using topical atropine in
order to examine inner eye. ind