Diabetes tends to make the pupils more miotic.
Mydriasis occurs naturally in youth, myopes, light colored irises and in anxiety.
Test the near pupillary response of there is a problem with the light response. Generally see reduced accommodation on same side Over time, involved pupil may actually become more miotic than normal pupil Cause is generally considered idiopathic, may be from ocular trauma or infection, herpes zoster, diabetes, autonomic neuropathies, etc.