Oculomotor palsy (p. 86) is accompanied by my-driasis only when the parasympathetic fibers on the margin of the oculomotor nerve are affected. This is usually not the case in ischemic neuropathy of CN III (e.g., in diabetes mellitus), because the marginal fibers receive their blood supply from pial vessels (p. 90). A tonic pupil is a mydriatic pupil with light-near dissociation. This condition may be due to local causes (infection, temporal arteritis) or to systemic diseases such as Adie syndrome (+ reduction/absence of tendon reflexes in the legs) and Ross syndrome (+ hyporeflexia + segmental hypohidrosis). The use of anticholinergic agents (atropine eye-92 drops, scopolamine patch) causes iatrogenic mydriasis.
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All you need is a proper diet of fresh fruits and vegetables and get plenty of exercise and you'll be fine. Ever heard those words from your doctor? If that's all heshe recommends then you're missing out an important ingredient for health that he's not telling you. Fact is that you can adhere to the strictest diet, watch everything you eat and get the exercise of amarathon runner and still come down with diabetic complications. Diet, exercise and standard drug treatments simply aren't enough to help keep your diabetes under control.